Adding Pagination

Hi,

Looking to add pagination to the blog page on a site and I can’t seem to match the code with any examples in the codex. Any ideas?

<?php
// Template Name: Blog Template
get_header();
?>

  <?php $loop = new WP_Query( array(
    'post_type' => 'post',
    'tax_query' => array(
        array(
            'taxonomy' => 'category',
            'field'    => 'slug',
            'terms'    => 'blog',
        ),
    ),
   ));

    if( $loop->have_posts() ) :

      echo '<div class="container">';

        while( $loop->have_posts() ) : $loop->the_post();

        $image = get_field('featured_image');

          echo '<div class="post_container" data-aos="fade-up" data-aos-offset="0" data-aos-duration="1000">';
            echo '<div class="row justify-content-center align-items-center">';
              echo '<div class="col col_3_12 post_image">';
                echo '<img src="' . $image['url'] . '" alt="' . $image['alt'] . '" />';
              echo '</div>';
              echo '<div class="col col_9_12 post_content">';
              echo '<h4><a href="' . get_the_permalink() . '">' . get_the_title() . '</a></h4>';
              echo '<p>' . wp_trim_words( get_the_content(), 85, '... <a href="' . get_the_permalink() . '">Read more</a></p>' );
              echo '<p class="date">' . get_the_date() . '</p>';
              echo '</div>';
            echo '</div>';
          echo '</div>';

        endwhile;
        wp_reset_query();

    echo '</div>';

  endif;

  ?>

<?php get_footer(); ?>

Thanks!