Custom random products sorting filter for WooCommerce

/**
 * Custom random products sorting filter for WooCommerce
 */

/**
 * Modify the product query to sort by random order
 *
 * @param WP_Query $q The WP_Query instance.
 */
function custom_random_products_sorting( $q ) {
    if ( ! is_admin() && $q->is_main_query() && is_woocommerce() && is_shop() ) {
        $q->set( 'orderby', 'rand' );
    }
}
add_action( 'pre_get_posts', 'custom_random_products_sorting' );