Exclude Specific Products from Parent Category

/**

 * Exclude specific products from appearing in their parent category.

 */

add_action('woocommerce_product_query', 'exclude_specific_products_from_parent_category');

function exclude_specific_products_from_parent_category($q) {

    // Only apply this on the parent category archive page

    if (!is_product_category('telt-og-pavilloner')) { // Replace with your parent category slug

        return;

    }

    // Define the product IDs or slugs to exclude

    $excluded_product_slugs = array(

        'lyskaede-10-meter-varmhvid',

        'lyskaede-20-meter-varmhvid'

    );

    // Convert slugs to post IDs for the query

    $excluded_product_ids = array();

    foreach ($excluded_product_slugs as $slug) {

        $product = get_page_by_path($slug, OBJECT, 'product');

        if ($product) {

            $excluded_product_ids[] = $product->ID;

        }

    }

    // Exclude the products from the query

    if (!empty($excluded_product_ids)) {

        $q->set('post__not_in', $excluded_product_ids);

    }

}