Pobieranie podkategorii z kategorii o danym id

$category = get_category( get_query_var( 'cat' ) );
$cat_id = $category->cat_ID;



if ($cat_id == '1' || $cat_id == '128' ){


    $term = get_queried_object();

    $children = get_terms( $term->taxonomy, array(
        'parent'    => $term->term_id,
        'hide_empty' => false
    ) );
    
    echo '
';
    if ( $children ) { 
        foreach( $children as $subcat )
        {
            echo '

            
' . $subcat->name . '
WIĘCEJ
';
        }
    }
     echo '
';


}