I use duplicati for docker containers. You just host it in docker and attach all the persistent volumes from the other containers to it, then you can set up backup jobs for each.

Telegram is less private then whatsapp, unless you use the private chats it’s not even encrypted.

Until now the easiest experience for me I actually had was Arch. You have to do everything yourself but i found it way easier to fix things in Arch than in any other distro I used.

That’s already Windows 11.