Ubuntu is indeed bizarre (tried 18.10 and 19.04). It's either lock, restart, or shut down. Otherwise I get to have fun at the command line.
And multiple monitors hasn't been anything but a pain either.
I was told that Ubuntu is about as friendly as Linux gets. Sure, it's more usable than say Devuan or OpenBSD, but that's nothing to brag about. It's nowhere near ready for primetime.
Well, I don't use Ubuntu, but it seems like they have hidden the suspend button behind a modifier key[1]. How inane. FWIW, personally I don't think Ubuntu is as friendly as Linux gets. You might want to check out something like Elementary OS. Though pretty much any other desktop environment won't have weird unintuitive stuff like this going on.
