There was some interesting ideas here! I was rather confused with the "taking damage resets the loop" mechanic and the hearts I supposedly had? It felt like they conflicted eachother a bit. The platforming was also a bit floaty and unrefined, which many people do fall into the trap of when doing their first platformer.
Still, do not give up hope. I see you've been submitting to the GMTK jam for quite a while, and you should be proud of the effort you have put in! Keep practicing, and I look forward to your submission next year :)