Hello,

I have unable to login your site: https://postimg.cc/gnZ0wgpg

You can add the filters in the sidebar in categories or shop pages. Go to Appearance > Widgets > in the shop page widget area you can add the filters widgets.

And With WoodMart you can create product filters form:
https://xtemos.com/docs-topic/how-to-create-filters-form/

1. You can not edit categories with elementor> Go to products > categories > edit categories.

2. Go to Theme Setting -> Shop -> Thankyou page > Check the default thank you page or you can add the extra content for the thank you page.

3. Please send some screenshot or short video for better understanding.

4. Go to Theme Setting > Shop > Action after add to cart.

5. Go to Products > categories > edit category > image for the category page title.

Best Regards.