Cinemachine - Left and right movement bug

Hey guys
I allready made a post about it but it got lost in all the many posts and i really need to fix this, its for a school project. I did some digging and it appears that it happens to a lot of people but noone can really tell me how to fix the problem. I made a post on reddit and someone suggested id use FixedUpdate() but all it seems to do for me is to restrict the cube from turning at all( no rotation at all anymore). The dude who was so kind to try and help me told me it works fine for him with FixedUpdate(). I hope you guys can help me ITS REALLY URGENT.

Heres the link to the original post:

https://forum.unity.com/threads/weird-jitter.689803/

Ps: Im sorry to bombard you guys like this and repost