How to i rewind a animation. Same speed, same length, same everything. Like it rewinded in a video

I have tried copy and pasting it backward. I am using moon animator and I’ve watched a video on how to do it with moon animator and he copy and pasted. It might be my computer but I’ve tried it on different computers. I keep trying and whenever I do it it’s different if I try to animate it by myself backward. I want t to rewind and stop in the same place so I can loop it if I loop it by guessing where it is it teleports it a little up/down/right/left I want to rewind it, I’ve tried so many things and nothing worked. Please help me!

This a problem that is having my friend…

I saw on a video, there should be a rewind option. If I am wrong, sorry.