Define and post Custom Post Type #Wordpress

Custom Post Types

<?php
// Register Custom Post Type in functions.php
add_action( 'pre_get_posts', 'add_my_post_types_to_query' );
 
function add_my_post_types_to_query( $query ) {
    if ( is_home() && $query->is_main_query() )
        $query->set( 'post_type', array( 'post', 'movies' ) );
    return $query;
}

//Querying Custom Post Types
<?php 
$args = array( 
    'post_type' => 'movies', 
    'posts_per_page' => -1 
    );
$the_query = new WP_Query( $args ); 
?>

<?php if ( $the_query->have_posts() ) : while ( $the_query->have_posts() ) : $the_query->the_post(); ?>
<h2><?php the_title(); ?></h2>
<div class="entry-content">
<?php the_content(); ?> 
</div>
<?php else:  ?>
<p><?php _e( 'Sorry, no posts matched your criteria.' ); ?></p>
<?php endwhile; ?>
<!-- reset global post variable. After this point, we are back to the Main Query object -->
<?php wp_reset_postdata(); ?>
<?php endif; ?>