How do I change animation based on tap

once the player changes an animation it does not change back. I want to make it so on tap sets animation to "1" and when I tap a second time it should set animation to "0" and vice versa

This should work:

touch On Tap object Player

... Player is animation "Animation1" playing -> Player Set animation to "Animation2"

... System else -> Player Set animation to "Animation1"

(... means Sub-Event to touch on tap)