Code snippets are added to your website's functions.php file and may be lost if you upgrade your WordPress theme. To add the snippets, you must first build a child theme.
One of the easiest methods to reorganise the fields is to use a plugin. You just need to change certain settings in your WooCommerce dashboard and reorganise the fields.
These are the many methods for reordering WooCommerce checkout fields on your website. It is a really nice tweak that you may add to your checkout page to ensure your clients’ delight.