new WP_Query vs. query_posts in Customizr loop

See here: https://themesandco.com/snippet/three-techniques-to-alter-the-query-in-wordpress/
look at the $wp_the_query way
this way you can have the new query in $wp_query, and use just have_posts() and the_post() and at the end of your loop reassign $wp_the_query to $wp_query.

@d4z_c0nf
Many thanks! I guess I was missing the most important part:
reassigning $wp_the_query to $wp_query

I have only one question (though I’m marking this as resolved) in the snippet 3 techniques to alter the query, it is presented as a function: am I able to parse it in the functions.php? bec I tried, but it did not work…

This is the working loop I put in my custom-page-template:

<?php do_action( '__before_loop' );##hooks the header of the list of post : archive, search... ?>

                    <!-- custom loop -->
                    <?php
                        global $wp_query, $wp_the_query;

                        $wp_query = new WP_Query( array(
                            'post_type'         => 'post',
                            'post_status'       => 'publish',
                            'posts_per_page'    => 5,   //show n posts
                            'cat'               => -35, //exclude this category from the posts list
                           //others parameters here: https://codex.www.ads-software.com/Class_Reference/WP_Query#Parameters
                        ) );
                    ?>

                        <?php if ( have_posts() ) : ?>
                            <?php while ( have_posts() ) : ##all other cases for single and lists: post, custom post type, page, archives, search, 404 ?>
                                <?php the_post(); ?>
                                <?php do_action ('__before_article') ?>
                                    <article <?php tc__f('__article_selectors') ?>>
                                        <?php do_action( '__loop' ); ?>
                                    </article>
                                <?php do_action ('__after_article') ?>
                            <?php endwhile; ?>
                        <?php endif; ##end if have posts ?>

   <?php $wp_query = $wp_the_query; ?>
   <!--  Reset Query -->
   <?php wp_reset_query(); ?> 

<?php do_action( '__after_loop' );##hook of the comments and the posts navigation with priorities 10 and 20 ?>

Hi Giorgio25b
well, first thing you don’t have to reset the query if you use the wp_the_query method.
Anyway don’t know why you want to port it in functions.php . I think it’s better having it in a custom template, this way checks on conditional tags will not be performed every time you load a page.
You can make a custom template this:

<?php
/*
*
Template Name: Mah
*/

add_action( '__before_loop'     , 'set_my_query' );
add_action( '__after_loop'      , 'set_my_query', 100 );

function set_my_query() {
    global $wp_query, $wp_the_query;
    switch ( current_filter() ) {
     case '__before_loop':
     //replace the current query by a custom query
    //Note : the initial query is stored in another global named $wp_the_query
    $wp_query = new WP_Query( array(
      'post_type'         => 'post',
      'post_status'       => 'publish',
      'posts_per_page'    => 5,   //show n posts
      'cat'               => -35, //exclude this category from the posts list
    ) );
     break;

     default:
     //back to the initial WP query stored in $wp_the_query
     $wp_query = $wp_the_query;
     break;
    }
}
/*
 * let's include customizr index.php
 * this way we'll not lose eventual
 * changes on it
 */
include_once( TC_BASE . 'index.php' );

Many thanks for the clarification and also for the tip on wp_reset_query; I had it because I’m listing 2 different loops.
I tried my custom page with 2 loops without resetting the query and it works fine.

Your last snippet answered my question! I was not able to understand why on the snippet section [/snippet/three-techniques-to-alter-the-query] is presented as a function; so I kind of got confused.

It works great and all your precious information made the picture way more clear than ever.

Way to go!

Glad to help. ??

Follow up on this topic in case somebody else is interested or had problems with pagination:

after solving a related problem in this other pagination support tread, here below 2 updated working snippets for custom loops in custom page templates.

Slimmer version, by @d4z_c0nf

<?php
/*
Template Name: News-Events Page
*/

add_action( '__before_loop'     , 'set_my_query' );
add_action( '__after_loop'      , 'set_my_query', 100 );

function set_my_query() {
    global $wp_query, $wp_the_query;
    switch ( current_filter() ) {
     case '__before_loop':
     //replace the current query by a custom query
    //Note : the initial query is stored in another global named $wp_the_query
    $wp_query = new WP_Query( array(
      'paged'             => get_query_var('paged') ? get_query_var('paged') : 1,
      'post_type'         => 'post',
      'post_status'       => 'publish',
      'posts_per_page'    => 2,   //show n posts
      'cat'               => -35 //exclude this category from the posts list
    ) );
     break;

     default:
     //back to the initial WP query stored in $wp_the_query
     //a.k.a. reset the main query
     $wp_query = $wp_the_query;
     break;
    }
}
/*
 * let's include customizr index.php
 * this way we'll not lose eventual
 * changes on it
 */
include_once( TC_BASE . 'index.php' );

//code nicely implemented by @d4z_c0nf

Full template page:
works with Customizr 3.2.17 and Customizr-Pro 1.0.11

<?php
/*
Template Name: News-Events Page
*/
?>
<?php do_action( '__before_main_wrapper' ); ##hook of the header with get_header ?>
<div id="main-wrapper" class="<?php echo esc_attr( tc__f( 'tc_main_wrapper_classes' , 'container' ) ) ?>">

    <?php do_action( '__before_main_container' ); ##hook of the featured page (priority 10) and breadcrumb (priority 20)...and whatever you need! ?>

    <div class="container" role="main">
        <div class="<?php echo esc_attr( tc__f( 'tc_column_content_wrapper_classes' , 'row column-content-wrapper' ) ) ?>">

            <?php do_action( '__before_article_container' ); ##hook of left sidebar?>

                <div id="content" class="<?php echo esc_attr( tc__f( '__screen_layout' , tc__f( '__ID' ) , 'class' ) ) ?> article-container">

                    <?php do_action( '__before_loop' );##hooks the header of the list of post : archive, search... ?>

                        <!-- custom loop -->
                        <?php
                            global $wp_query, $wp_the_query;

                            $wp_query = new WP_Query( array(
                                'paged'             => get_query_var('paged') ? get_query_var('paged') : 1,
                                'post_type'         => 'post',
                                'post_status'       => 'publish',
                                'posts_per_page'    => 2,   //show n posts
                                'cat'               => -35 //exclude this category from the posts list
                            ) );
                        ?>
<!-- code nicely implemented by @d4z_c0nf -->

                        <?php if ( have_posts() ) : ?>  

                            <?php while ( have_posts() ) : ##all other cases for single and lists: post, custom post type, page, archives, search, 404 ?>

                                <?php the_post(); ?>

                                <?php do_action( '__before_article' ) ?>
                                    <article <?php tc__f( '__article_selectors' ) ?>>
                                        <?php do_action( '__loop' ); ?>
                                    </article>
                                <?php do_action( '__after_article' ) ?>

                            <?php endwhile; ?>

                        <?php endif; ##end if have posts ?>

                    <?php do_action( '__after_loop' );##hook of the comments and the posts navigation with priorities 10 and 20 ?>

                    <!-- reset the main query -->
                    <?php $wp_query = $wp_the_query; ?>

                </div><!--.article-container -->

           <?php do_action( '__after_article_container' ); ##hook of left sidebar ?>

        </div><!--.row -->
    </div><!-- .container role: main -->

    <?php do_action( '__after_main_container' ); ?>

</div><!--#main-wrapper"-->

<?php do_action( '__after_main_wrapper' );##hook of the footer with get_get_footer ?>