How do I access product attributes?

        foreach ( $order->get_items() as $item_id => $item ) {
            // Get the product
            $product = $item->get_product();
            //fwrite($logfile, var_export($product, true));
            
            // Check if product exists and has attributes
            if ( $product && $product->has_attributes() ) {
                // Get the product attributes
                $attributes = $product->get_attributes();
                                
                // Loop through each attribute
                foreach ( $attributes as $attribute ) {
                    // Check if attribute is 'Delivery' and is visible
                    $attrname = strtolower($attribute->get_name());
                    fwrite($logfile, $attrname);
                    if ( $attribute->get_visible() && strtolower($attribute->get_name()) == 'class / delivery' ) {
                        // Get the attribute values
                        $values = $attribute->get_options();

                        // Check if any value equals 'Delivery'
                        foreach ( $values as $value ) {
                            $valuename = strtolower($value);
                            fwrite($logfile, $valuename);
                            if ( strtolower($value) == 'delivery' ) {
                                $delivery_attribute_found = true;
                                break;

                            }
                        }
                    }
    
                    if ($delivery_attribute_found) {
                        break;
                    }
                }
            }

Hello, the above code snippet is from the filter woocommerce_email_additional_content_customer_processing_order.

I am able to access the product object but am unable to access the product attributes. Can someone please advise me on how to correct my code?

Thank you.