Search by custom attribute

This will take some customization to include attributes in the searches.

I think the layered nav widgets would help you with this need in a different way though: https://docs.woocommerce.com/document/woocommerce-widgets/#layered-navigation-widget

Two questions

Where can I customize the search? I know just a little about code but maybe I can do something

Second, if I use the WooCommerce Product Search I can search by a custom attribute?

Thank you so much

This plugin will allow the user to search by attributes: https://docs.woocommerce.com/document/product-finder/.

You may also be able to get this plugin to work for this need: https://www.ads-software.com/plugins/relevanssi/

Regarding custom code, if you can’t find where to place the code – then you probably won’t be able to code what you need to in order to get this working how you need.