/**
 * Hide specific product category on the shop page
 */
function my_custom_woocommerce_product_query( $defualt_query ) {
    // Check if the Current page is shop page
    if( is_shop() ){
        // Add the default query into variable "taxonomy_query"
        $taxonomy_query = (array) $defualt_query->get( 'tax_query' );
        // add addtional query for Excluding specific product category
        // For Ex.Videos
        $taxonomy_query[] = array(
            'taxonomy' => 'product_cat',
            'field' => 'slug',
            'terms' => array( 'videos' ),
            'operator' => 'NOT IN'
        );
 
 
        $defualt_query->set( 'tax_query', $taxonomy_query );
    }
}
add_action( 'woocommerce_product_query', 'my_custom_woocommerce_product_query' );