Hey, good job! Legit you learned from scratch and made a functioning game. Fix the camera up, add some more reactive sound effects (enemies getting hit, them dying, a landing noise etc.) and give yourself some i-frames after being hit and you got the foundation for a solid platformer. Definitely felt my heart lurch when I tumbled down Getting-Over-It style.
All in all, you should be proud of this submission. Legit, you got a good game in!