WP: Pagination custom post types

template.php

<?php
    $paged = ( get_query_var( 'paged' ) ) ? get_query_var( 'paged' ) : 1;

    $the_query = new WP_Query( array (
        'post_type' =>  'offer',
        'post_status' => 'publish',
        'orderby' => 'date',
        'order' => 'DESC',
        'paged' => $paged
    ) );
    
    while ( $the_query->have_posts() ) : $the_query->the_post();  ?>
    
    //all what you need to show
    
    <?php endwhile; ?>
    
    <?php if(sizeof($the_query->posts) >= 9): ?> // based on settings of reading setting (number of post max show in blog)
      <div class="nav-left"><?php next_posts_link(__('Older Entries','theme'), $the_query->max_num_pages) ?>
      <div class="nav-right"><?php previous_posts_link(__('Newer Entries','theme')) ?></div>
      <?php wp_reset_postdata(); ?>
    <?php endif ?>