I try to change a WooCommerce order status to "Processing" when the current status is "Approved" and the order includes a specific product ( id = 10).
I have attempted the code below but it is not working. I am quite new to php and would appreciate any guidance!

add_action('woocommerce_order_status_changed', 'ts_auto_complete_business_cards');
function ts_auto_complete_business_cards($order_id)
{
    if ( ! $order_id ) {
        return;
    }
    global $product;
    $order = wc_get_order( $order_id );
    if ($order->data['status'] == 'approved') {
        $items=$order->get_items();
        foreach ( $items as $item ) {
            $product_id = $item->get_product_id();
            if ($product_id!="10")
            {
                $order->update_status( 'completed' );
            }
        }
    }
}