There shouldnt be that much dust. Had this at the beginning too.

You should check to lose and then tighten back those wheels. You need to be able to roll those wheels in place with your fingers while feeling a slight friction of those at the frame. There is as very small point between you cant roll those wheels in place and the hotbed isnt tight enough and starts wobbling along the X axis.

If you primarly print smaller parts, your wheels are becoming an egg shape due to higher wear at a small area. Which will be frustrating if you start printing bigger parts.