I liked the pixel art you made! The color scheme is great and the player animations are great.
Assuming you're using Unity, I'd recommend playing with the cinemachine camera settings so the player doesn't go too far from the player.
WebGL version doesn't have a full screen option so the player leaving the screen is pretty frequent.
The player feels a little floaty, maybe increasing the gravity after the apex of the jump would feel better!
Overall great work!