Restic (local repo) which I sync onto a Hetzner Storagebox using rclone.

Tmux is screen in more powerful. Zellij is another great terminal multiplexer. Worth giving all of them a whirl.

This actually drastically decreases privacy and makes you more trackable. The best thing to do with your user agent is to set it to the most common one and leave it at that. Anything else (especially an ever-changing one) is a much more uniquely identifying piece of information.