.deb distros are doomed from the start if you need to use third-party repos (which you do, for a desktop system) because they always end up undermining the stability of the packages from the core repos in the long run.
Try an Arch-based distro, they’re super stable because their compatibility model is more robust, and there are options depending on how much hand-holding you want — ranging from vanilla Arch to Endeavour to Manjaro.