My laptop seems very finicky with linux and enjoys periodically freezing. Some distributions are more stable than others and I'd like to keep testing other distributions without reinstalling/ downloading/transferring all my apps and steam games constantly.
What I would like to achieve is to have my small handful of flatpak apps and flatpak steam games on a separate partition to quickly access while I test and troubleshoot issues.
Is that possible to do with flatpaks?
Maybe just start with the different versions available in your distro's package manager. I've never downloaded a custom kernel from somewhere else. (Well, I have but that was embedded stuff and not a desktop computer.)