I’ve had the same issues with Endeavour, sometimes you get buggy software and need to roll back. I do a full system backup once a week and update once or twice a day (I like updating frequently as it makes it obvious which package broke your system). When I get a bad package I just restore from backup but exclude /home. Then from there I install packages one at a time until I find that bad one and then just ignore it for a while. It really hasn’t been too bad. I don’t think you’ll find anything like the AUR if you start distrohopping. Debian is the king of set it and forget it, but it might be a shock to go back older packages of everything.
It’s the price of bleeding edge :) Hope you find what you’re looking for in Nobara, my dude.