Veeam endpoint backup. The GUI does not exist and the cli version does not work with Fedora 41 and btrfs. I think it is the file system that is not supported. However, I use timeshift but it is not sending it remotely.
I'm not sure if this would work, it would definitely be more of a hassle if it does, but can you install Veeam B&R community edition and use it's agent to do a backup, or does that really only work on VMs?
I doubt that as the agent need to work first. Which it does not. And it will not solve the gui part. I do not accept running one extra VM as solution. Better is to look for alternative backup solution.