Is it possible to simulate your games, or do you have to watch the 2d gameplay for every single game. I can’t find a way around the 2d gameplay

If you just want to sim a single game, uncheck the in front of "Play/Watch" which is just above the two teams scheduled to play in the "Today's Games" screen.

If you want to sim all games, go to the 3 bar menu (very top left of the screen) and seclect "Game Options" and then move the slider to the right for "Default to Simulating Human Games".