Cleans and Snatch

I’m relatively new to Olympic lifting so sorry if easy answer. I currently find myself feeling extremely strong at 100lb snatches, but as soon as I hit 120 and up I hit a wall. Not sure if its mental or factoring from a mental block from I’m not confident in the execution.

My power Cleans and presses are tricky when I power clean my push press/shoulder press is about 35lbs more even feeling unstable in the upper back. Is that normal?

Couldn’t see much of a question in the snatch paragraph.

One should be able to jerk more than they push press, and push press more than strict press.