Legoraft

From my experience, Cities Skylines works great through proton on steam (it’s a compatibility layer for windows games) and Minecraft has it’s own native launcher (which is downloadable from their site here, you need to use the debian installer for ubuntu). As far as ubuntu native, I haven’t used it a lot. Linux mint is a distro recommended for people who are used to windows most often, you can take a look around.

As far as the other games go, only slime rancher is one that I know doesn’t work through steam. For most games you can take a look at protondb, where you can just search for the game.

You can get more updated packages by running debian testing, which is quite stable. Debian also is more stable. Security patches are still brought to the main release, making it secure. The stability comes from the lack of a lot of new updates which come with a lot of new bugs.

Googled around a bit, seems like this is the official guide

dnf and apt are both package managers, they function a bit different. The ppa is a personal repository set up for apt, so it qon’t work in combination with dnf. You could try and set up quickgui through the build instructions with the tarball on their github page, but as far as I can read right now quickemu does work on fedora through dnf