EndeavorOS. It’s based on arch which has great nvidia driver packages if that's your thing and the arch wiki is amazing.
A nice package manager wrapper is bundled. Do yay \ to search for any package and install it; do yay (nothing else) to upgrade everything, and yay -Rcns \ to remove stuff and all their unused dependencies. I also recommend chaoticAUR which is also easy to setup. What is the AUR, you ask? A repository for user-created ways to install TONS of stuff, think homebrew (including cask, unseparated) but on Linux
For the DE I recommend MATE but you can select any of the major ones in the installer
Get synapse for a spotlight-like search; it uses the alt+space keybind by default
But regardless of what distro they use, they're probably going to have to Google stuff every now and then. If they're not ready for that, then maybe they're not ready for Linux.
I switched a few months ago, and EndeavorOS is the only distro I've used and see no reason to switch. It's been fantastic.