How the heck do people play on such tiny screens?

I’ve got a Powkiddy X55 and I’m really enjoying it, but for some games I find even its 5.5” screen to be fairly small for the task, particularly when looking at games from the 32-bit era and up.

How on earth are people actually managing to play these games on 3.5” and 2.8” displays? I feel like it would be really cramped for screen real estate or you’d basically be holding the device in front of your nose just to play it.