honestly, and this is a hill i'm willing to die on, the distro really doesn't matter it's the DE that's the deal breaker.

You could have something like CachyOS, which is Arch, that is painfully easy to install. you can choose your DE, hell even your shell, now from the gui installer. It's noob friendly. I've seen more people online have more issues trying to update Ubuntu than Arch. Hell I rarely read of any Fedora issues when compared to Ubuntu and Mint.

Honestly it doesn't matter the distro. as long as it can install KDE Plasma which is THE defacto noob friendly DE then it's fine. if it's the default DE, even better.