I liked the pixel art. It looks good!
Though some of the pixel art looks blurry, but I'm pretty sure you already know how to unblur them because you did it with the player idle. I'll say it anyway, you want to go to your sprite, and set "Filter Mode" to "Point (no filter"). Then go to "Compression" and select "None". And make sure to do this to all your sprites (that are pixel art)!
Another quick pixel art tip here, try to keep the pixel size of all sprites the same, because your sprites might otherwise look out of place. For example, the grass pixels are way smaller than the player pixels.
There was also a problem where the player sometimes flipped over and it made the game unplayable. To fix this, go to your RigidBody2D component on your player object, go to "Contraints", and check "Freeze rotation Z".
Also, when you move midair against a wall, you'll just stick to the wall and float there. There is also a way to fix this. You can watch this video if you're interested:
Also, you can reply to itch.io comments by clicking "Reply" under the comment. It makes the comment section a lot more organized.
Thats all the tips I have for you, hope that helps you on your game dev journey!
Anyways, for a first game, this is pretty good! Good entry to the gamejam. And good luck on your future projects!