openSUSE and Fedora with Plasma will be fine choices for you, based your post. Tumbleweed will take a bit more work, but usually it's nothing too difficult. You can also go with Leap, which generally won't have the same issues Tumbleweed has. I personally use Tumbleweed and like it a lot.
Fedora is just an all around solid distro, endorsed by Linus Torvalds himself! In my opinion, since you already have some experience with it, stick with Fedora. It'll be fine.
I would like to think I would just stop using the Internet, or at least adopt a protocol like Gemini. How that would work exactly is hard to say, since the Internet is almost mandatory these days. Still, you have to be willing to inconvenience yourself to maintain at least some control on privacy and security online.