if you can't switch to linux, upgrade windows to LTSC. massgrave.dev is your friend, they have installers and an activator, maybe it can even change the windows type without reinstall.

and then start planning your transition to linux. don't overthink it, just what you need, and what files you need over there, especially before deleting windows. fedora kde edition is a good starter distro, you shouldn't need to tinker it if you don't want