Linux

I know people have already said it, but Mint is very possibly what you want. I'm not super tech savvy (although I am surrounded by programmers in my personal life) and my husband recommended Mint with the Cinnamon desktop environment for me. It almost felt too much like Windows, at first! I was looking for a big change, and didn't find it there. With that said, I have grown quite attached to it.

Things are largely easy, even for me. For most programs, installing is as simple as downloading a .deb file and running it, much like running a .exe for installation on Windows. I very, very rarely have to touch my terminal, and when I do, it's because I'm doing some unnecessary nonsense, and I have a guide up to tell me exactly what to enter. The GUI has been great for me for navigating files, handling various settings, etc etc.

In terms of gaming, Steam will use Proton by default. It's their own creation, and frankly, it's very good. When it isn't good enough, there are custom versions of Proton, which is a little more complicated but still relatively easy. For games that aren't on Steam, I've used Lutris with largely good results. The only times I run into issues are with anti-cheat, which largely does not work well with Linux. If you want to find out how much of your Steam library would work, you can try protondb.com, which has a handy tool for figuring out how many things from your library will work, and to what degree. Lutris has something similar in their own website, lutris.net, as well.

This comment ended up being a lot longer than I expected, but I hope there's at least something helpful in here! Whether you end up with Mint and/or Cinnamon or not, I hope everything goes well in your search for the right distro and desktop environment!