I think I'm going insane reading half of the comments. The links DON'T EXIST, that's why GSC returns a 404 error.
It's just random spam from outside sites that try to generate permalinks on a certain property, nothing else. I've had that on one of my sites over the past 6 months, but it's gotten worse since September, I think some of the algo updates messed up something.
You can safely ignore these. Google marks them as 404 (you can check on your GSC) and they don't really impact your SEO or anything. I mean, Google themselves have discounted them, hence the 404 in GSC.
Usually that's spam sites trying to upload their own sitemap and latch onto an existing URL on your site and try to 301 it to their own property etc. It doesn't usually work, and in some time you'll see the 404'd pages in GSC disappear too. It can take a few months.
If you're worried, run a Sucuri/Wordfence whatever check.