This might sound weird but I always like taking a handheld with me when I go to work or go out for a while in general. It helps with my anxiety knowing I can play a game to calm me down even if it’s just for like 20 minutes in the bathroom. My favorites to carry are a 3DS, switch, or vita.
I bring technology on vacation in case I can’t sleep or something. I agree, it’s hard to find great mobile games, but I can’t find pocket space for a handheld or controller for emulation.