One suggestion I haven’t seen addressed: use a filesystem with snapshots such as Btrfs and combine it with Timeshift.
With Timeshift you’ll be able to roll back in time on your disk and undo stuff. It can take advantage of the lightning fast snapshots of Btrfs to do that.
On Btrfs, separate your /home into a subvolume @home so that, when you do roll back, your personal files aren’t affected.
Configure policies for daily and weekly snapshots on Timeshift. Don’t worry about space, they’re basically free.
That way you can feel better experimenting with your setup, as long as the system is Bootable.