WordPress posts in my html/php website

Hi,
I display my wordpress post in my html website. I’ve installed wordpress in wp directory.

In index2test.php
Head :
<?php require('wp/wp-blog-header.php');?>

Body :

<?php function my_persolink($id=0) {
     if ($id == 0) {
          global $post;
          if ( empty($post->ID) )
               return ;
          $id= $post->ID;
     }
     echo "https://www.ville-joeuf.fr/alaunetest2.php?idpost=" . $id;
}?>
<?php
    $args = array('post_status'=>"publish",'post_type'=>"post",'orderby'=>"post_date");
    $postslist = get_posts( $args );

    foreach ($postslist as $post) : setup_postdata($post);
?>
<div class="article">
 <div class="Titre7" align="left"><?php the_title(); ?></div>
<div class="thumbnail">
<?php if ( has_post_thumbnail() ) {
  the_post_thumbnail('thumbnail');
}?></div>
<div class="alaune"> <?php the_excerpt(); ?></div>
<div class="suite"><a>" title="<?php the_title(); ?>">Lire la suite</a> </div>
</div>

<?php endforeach; ?>

In alaunetest2.php wich displays entire posts

<?php
$id=$_GET['idpost'];
if (isset($id) && !empty($id)) {
   // pour un article
   $args = array ( 'p' => $id);
   query_posts( $args );
   while ( have_posts() ) : the_post();
echo '<div class="Titre7">' . get_the_title(). '</div>';
    echo '<br />';

   the_content();
endwhile;
wp_reset_query();
}
else echo 'pas id';

?>

How can i have my pagination working ?
I’ve installed the WP-PageNavi plugin in my wordpress.
In my index2test.php I put <?php wp_pagenavi(); ?> but it doesn’t work.
How can I have pagination ?

Thanx