If you’re looking for something that won’t give you any headaches then I wholeheartedly recommend Bazzite. IMO it’s the best distro for the casual user.
I’ve also been interested in NixOS lately for the ability to easily transfer and back up the config, but I have yet to make that jump. It seems like a really great way to set up an OS though.
It’s the first distro I’ve tried where everything just works right out of the box and nothing is overly bloated. All of the software I use was available from the Bazzar and my printer even worked right away. No fiddling with CUPS or trying to install from binary/tar/appimg/etc.