If you’re interested in setting up another program, you can use Overseerr to feed requests to Sonarr. Other people who have access your plex library can also use it to request stuff from you, but even if you’re a solo user, it’s a nice interface to search and add content with.
I was using Fedora for about a year and it was great. Nice and stable, almost everything worked out of the box. Then I goofed up an update and had to install something new, and I chose Arch. Arch is working mostly fine, of course I had to learn a thing or two about how some subsystems worked but the Arch wiki is a wonderful resource. We’ll see how long this install lasts, it’s been smooth sailing for about a month now.