How do I make it so, when an animation that moves your character work?

I made an animation that moves your avatar backwards. I made a script so once I press two on my keyboard, it plays. The script works. But, once the animation plays the player goes back where they were: https://gyazo.com/4da0b48670698e82e9c073af7d24406b

Note: The humanoid doesn't move because I didn't know how.