Upgrades are easy, backups are really good, if upgrades mess up, you can restore from backup even if NC is hosed. As for local storage, I never did it, but here’s the docs for it! https://docs.nextcloud.com/server/latest/admin_manual/configuration_files/external_storage/local.html

Crippling is a bit extreme - have you used Proton recently?

https://protondb.com/

Check the list, bud. It’s far from just obscura.

Majority by number of distros, or only including desktop Linux distros? Because yeah, if you’re including server distros, that’s true, and if you count it by the number of distros, that’s true, but most people use one of a handful of distros on their desktop. Both gnome and KDE have software centers which you can use to install stuff without the command line.

It just means your KDE version is newer, it’s also the distro made by the KDE devs. I’m not too worried about canonical, they’re annoying, but it rarely affects me.

Just get KDE from the horse’s mouth then and use KDE Neon. Ubuntu packages, but snapd isn’t even installed by default. It also ships with rolling release stable KDE, but isn’t rolling release otherwise.

Try a few of the options here. I personally have used powertop and tlp and they help, but the best mix for your hardware might be different.

I have it set up. Try the AIO docker image. Once you get it set up, it pretty much just works. You just pick which office suite you want, check a few optional features if you want 'em, and it handles the rest for you. Most importantly, the AIO image is from nextcloud. They test it, it always works because it is the blessed version from them. If you’re not a Linux guy, don’t try the other installation methods, they’re much, much more difficult.

If you’re using pipewire, try XDAJackRetask, I use it for that purpose.

I’d have recommended KRename personally. It uses some programming-esque stuff (format specifiers for stuff), but it’s not exactly difficult to do advanced stuff with it.