We can add pagination to our page.

In wordpress we can split multiple post in different pages.

We can set how many post per page we want

When multiple loops are used in a theme template file only one loop, the main loop, can be paginated.

<?php
            $paged = ( get_query_var( 'paged' ) ) ? absint( get_query_var( 'paged' ) ) : 1;
            $args = array(
            'post_type' => 'video',
            'posts_per_page' => 6,
            'paged' => $paged
            );
            $query = new WP_Query($args);
            if($query->have_posts()) {
            while($query->have_posts()) {
            $query->the_post(); 
            // custom content ?>

This is the loop in which we add the paged variable and number of post we want per page.

I have done 6.

<?php
                $big = 999999999; // need an unlikely integer

                echo paginate_links( array(
                'base' => str_replace( $big, '%#%', esc_url( get_pagenum_link( $big ) ) ),
                'format' => '?paged=%#%',
                'current' => max( 1, get_query_var('paged') ),
                'total' => $query->max_num_pages
                ) );
                ?>

This code is put where we want to apply pagination usually at the bottom of the page.