How to reverse animation?

Question

Unity

I want to make the player click on the arrow and select the level and the animations play in a circle. The problem is that it is not possible to make the animation backwards. There is a Multiplier parameter, but it somehow does not work correctly (I have two methods Left and Right, if the player presses the right button, but the animation plays normally and the level scrolls, but if in Left, then everything crashes, then the animation does not play at all, then teleport to the very beginning). I tried to experiment with the cube and gave it a simple animation, still nothing.

Answer 1

In the animator there is a button "Reverse" or something like that. Or take the animation with mixamo and download the animation first forward and then backward.

Answer 2

I only found mirrow, which mirrors the animation instead of doing it backwards. Maybe you meant something else. Show with a screenshot.