Thank you very much
really appreciate the feedbac
Since I was alone and not really good with Art/Music I just did my best to pick good ones from the asset store,
At the end, I didn't even have enough time to create better looking UI, so I guess that was the right decision.
When I got 'stuck' in platforms I could still run left/right and jump, so I didn't really think of it as a bug but rather a two level platfrom.
However I never got stuck in the gound (still knew I should have implemented a quick reset key or button in the pause menu)
The part in the third level was actually intended to have the player jump in both directions and get more used to switching sides with unfamiliar controls.