There's distros aimed at newbies. Maybe these distros should ship with a small, quick, idiot-proof tutorial saying (with fancy images too) "hey don't do this, do this instead" "if you need to do this you can do so like this" and some common troubleshooting but you'd still have some folks who refuse to listen and do something that breaks their system. And we as a community should only tell noobs to use one or two distros like Linux Mint, at most a few other options in case someone needs something more specific. But aside from these distros not every distro should aim for larger marketshares, in fact some are probably better left with low marketshares (for desktop users anyways).

Also, it is impossible to have a system that doesn't have problems at some point and users shouldn't expect to not run into issues and they should be willing to at least try and look up a solution, and this doesn't go just for Linux. The closest to an unbreakable system that I can think of is Debian where the only thing someone uses is Firefox to navigate the safe sites, possibly with uBlock Origin on and the browser is in a flatpak or contained in some way. If someone doesn't want to learn at least the basics of how to use a computer and how to try to fix your problems they probably shouldn't be using computers honestly.

Of course there's issues that aren't easy to resolve and that's what forums and IT technicians are for too.