The Arch-wiki was my main reason for switching to arch. When I used an ubuntu based distro I felt like I had to rely on forum posts to figure out anything whereas with arch everything is documented incredibly well

I think I ran into that exact issue myself when I tried out fedora silverblue. I believe there was a workaround but it was quite involved from what I remember…

I use KeepassXC which is free and open-source. The passwords are stored as an encrypted file on your own system. No servers or businesses involved.

Personally I put mine in onedrive so it is synced between all of my devices though, so I guess there is still a server involved in that case

I did have a look at their tutorial and found it very technical, difficult to read and was unable to find any information on whether it is possible to send characters/text that are not part of the current keyboard layout. From what you describe I can guess now that kmonad is not really suited to what I am trying to achieve though.