... when you move ¿

You stop being afraid/scared after you start moving. ¿

when you’re in motion/on the move

👍🙏

The problem with movement is that it sounds like you’re talking about a
bowel movement.

Может, это и проблема, а мне теперь смешно)))))

While moving, a fear disappears. ?

I would just say “fear” – it’s an abstract noun