I mean is that even possible to do? I've never seen it happen tbh. Like someone being able to evade grabs in the first turn.

possible

if you win the grab exchange on a hand. you have in essence avoided the grab. you could stick their own hand to them selves and force a self grab and be really free from them. if you obtain an elbow grab you can prevent a grab as well. if you are talking compete dodge of grabs generally not unless both players are doing something pretty un-orthodox. alternatively you can ask for a no grab game.