How to remove auto added product in woocommerce?

Question

PHP

Hi guys, there is a code to automatically add a product to the cart from certain categories. How to make it so that the customer can remove the automatically added product from the cart if he does not need it? Please correct the code, my knowledge is not enough =(

//Автоматическое добавление товара в корзину
add_action( 'woocommerce_before_calculate_totals', 'auto_add_item_based_on_product_category', 10, 1 );
function auto_add_item_based_on_product_category( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
        return;

    $required_categories = array('beef','chicken','indeyka','horse','polufabrikati','farsh','fish','baranina','pig','shahlik'); // Required product category(ies)
    $added_product_id = 738; // Specific product to be added automatically
    $matched_category = false;

    // Loop through cart items
    foreach ( $cart->get_cart() as $item_key => $item ) {
        // Check for product category
        if( has_term( $required_categories, 'product_cat', $item['product_id'] ) ) {
            $matched_category = true;
        }
        // Check if specific product is already auto added
        if( $item['data']->get_id() == $added_product_id ) {
            $saved_item_key = $item_key; // keep cart item key
        }
    }

    // If specific product is already auto added but without items from product category
    if ( isset($saved_item_key) && ! $matched_category ) {
        $cart->remove_cart_item( $saved_item_key ); // Remove specific product
    }
    // If there is an item from defined product category and specific product is not in cart
    elseif ( ! isset($saved_item_key) && $matched_category ) {
        $cart->add_to_cart( $added_product_id ); // Add specific product
    }
}