tbh you’ll likely find yourself better using anything else that isn’t Ubuntu. Debian is cool if you’re okay with your desktop environment being a bit behind (as for apps you can use flatpaks for the most up to the date, it also is good if you need most app support as it can install .deb) or arch if you want to learn a bit more about how your little penguin lives inside that metal box of yours! Fedora I am not sure as I think they implement or will implement telemetry.
One last thing is that not all telemetry is bad. if you take a look at KDE’s initial prompt for telemetry it is anonymous and is used to simply try and make the DE better
As a user added: Fedora does opt-in telemetry which is the same as Debian’s where if you want you can enable it but by default it’s disabled
I think torrents are the best approach to this thanks to their decentralized nature. they can die if nobody seeds anymore but that doesn’t mean uploading it on some site is gonna make it better as that site can go down too. Besides, if you have a spare laptop you can keep always plugged in and doesn’t consume a ton, you can make it constantly seed your stuff.
I think personally the best approach is through torrents but that’s how I see it. Do what you think works best