We see Google is crawling these parameters and outputting a 404 for them. This is odd. Google should not be crawling those kinds of URLs to begin with. We were advised speaking to our GeneratePress theme developer and ask them why those pages are being created as it seems the theme is generated these “filters”
We use Yoast Pro to generate the site map. We assumed it was constant, meaning that it would not generate a page 6 of a product category if for some reason that day there were only 5 pages. The other issue may simply be that by the time google indexes the map, the map has changed.