I suggest BazziteOS. I have it installed on 2 of my computers for about a year and it works great. It runs KDE and it looks similar to Windows but is much better. Also, I believe it has support for Wallpaper Engine, though I haven't tried it.
It is Fedora based and Fedora also has a sizeable community for any questions and tutorials you may have.
The reason why I recommend Bazziteos is because it comes out of the box ready for gaming, you would have steam, wine, lutris, etc installed almost instantly and ready to play.