Show Specific Category on Shop Page

add_action( 'pre_get_posts', 'custom_pre_get_posts_query' );
 
function custom_pre_get_posts_query( $q ) {
 
    if ( ! $q->is_main_query() ) return;
    if ( ! $q->is_post_type_archive() ) return;
     
    if ( ! is_admin() && is_shop() ) {
 
        $q->set( 'tax_query', array(array(
            'taxonomy' => 'product_cat',
            'field' => 'slug',
            'terms' => array( 'albums' ), // change 'albums' with your product category slug
            'operator' => 'IN'
        )));
     
    }}
 
    remove_action( 'pre_get_posts', 'custom_pre_get_posts_query',9999 );