The appimage seems solid for me thus far, installed through this handy tool.
rfy
joined 1 year ago
And in the case that your Linux distro doesn't have a client in their repos, you can very easily use Mullvad with wireguard in the terminal.
You may find yourself interested in suckless software, take a look here.
Its all written and configured with C, so it should be pretty fast. And there's dwm, their dynamic tiling window manager.
I guess the distro/package manager would be whatever you want, as suckless software encourages that you build from source and maintain your version of the software.
Void Linux
The name is really cool