How can I properly switch between Linux distributions?

If you want to keep the gaming stuff and apps, just ensure you save your /home properly. Look into toolkits that can help migrate settings, but ultimately, many apps require reinstallation.

Honestly, the best approach might be to choose a distro you truly like and learn it inside out. I’ve hopped around from Ubuntu to Arch, Fedora, and more, but I found that sticking with one for a while helps you really get the hang of things, rather than just jumping around all the time.

Distro hopping can be fun, but if you’re just switching for a different desktop environment, most apps will behave the same across distros. Maybe try to settle on one that you actually find useful instead of frequently switching just for the sake of it.

You'll definitely want to create a separate /home partition when you install Fedora. This way, you can wipe the system files but keep all your personal data intact in /home. Just keep in mind that there's no guaranteed way to migrate Flatpaks and other packages between distros, since they each have different formats. It's usually simpler to back up your important files and then reinstall your apps manually later on.