Search by category & attributes in select form

Hey !
I’m actually creating a new wordpress website using Elementor (Pro) & WooCommerce.
This website is for selling construction machine.
All this machines has a category (type of the machine) & some attributes like the brand, the actual state etc.
After a lot of research, I didn’t find the solution for my problem.

I want to implement a research module on my main page, composed by 2 selects lists :
One for my categories, one for the attribute “brand”.

The mains problems are :
– Get the category & attributes list, and put it inside the selects
– Get the results depending on this two things.

I already saw that the links “/attributesName/attributeValu”e and “/CategoryName/CategoryValue” are working, but I didn’t find how to merge this two things.

I have some knowledge in php and it’ll not be a problem for me to create a script.
Can you help me ?

Thanks!!! 🙂