When I was using Windows around 2012, when I had a very low amount of computer experience, I would commonly wipe and reinstall Windows due to how often it got filled with crap.
Now I have a couple Windows installs that have been going strong for years. One of 'em has shady proprietary Chinese factory flashing tools on it, and a full development environment for TI graphing calculators. That was my old computer; I don't use either of those tools anymore so my new computer doesn't have them.
I've found that the correct answer for non-technical people is a Chromebook. They're the most bullet (or idiot, depending on how much you like them) proof option.