I wonder how people do this or if my ears are just shaped weird, because I can’t even sit totally still at my desk without them falling out.
The loose fit of the regular AirPods and the wired EarPods never made any sense to me.
I've used these to sleep to podcasts or quiet music at music festivals, and they block out the music from outside pretty well. This is because of the flexible rubber seal. My wireless earbuds are hard plastic all the way around and sit (securely) in my earlobes while my wired ones actually go inside my ear canal.
I've also heard that the most recent AirPods Pro fit much better for people who have had problems in the past—I think because their rubber buds also have some foam in them, to help them create a better seal.