Millions of people sadly
zod000
Damn, sorry for suggesting it in that case. I didn't have a hard time getting the SNES Classic at the time, but the NES Classic was a fight. I ended up having to spend far more than it was worth to get one.
Retropie has a video on their setup guide that can help with the emulation front. Setting up a Raspberry Pi itself can be a little annoying if you've never done it before, but there are tons of guides out there. Just keep in mind that they run off of a microSD card, so you usually install by using a card reader on a PC and installing the image onto the card before you do anything else.
I actually stopped using all of Pis because of little annoyances that added up, but I am a very picky bastard so don't let that totally dissuade you.
Easiest? An SNES Classic if you can find one for sale. It is really just a trivially hackable linux pc that comes with SNES controllers and has a nice interface. For something you can definitely buy new and don't want to have to hack anything, probably a steam deck with the dock and a controller because of how easy it is to set up. All of those options are much more expensive than something like a raspberry pi with retropie, but they are easier.
My Pixel 4a was perfect, but it is sadly gone now. I ended up with an 8a to I could keep using grapheneOS, but without a headphone jack I just started using a standalone portable music player. It seems ridiculous because it is, but that is what they forced on me and I will never forgive any of these companies for it.
Back around the turn of the millennium (to make me sound aged and wise) I did AOL tech support. I ran into so many people that used AOL email as a storage medium. I received death threats from a guy that lost his doctor thesis work because he was storing it in chunks attached to AOL emails to himself. That isn't even close to the dumbest thing I encountered in that ring of hell.