Overscope is a common problem in hackathons/jams and in the software industry as well.
It is good that you are young and already able recognize and learn from that! Next jam will be cooler :)
Keep it up!
Totally! My projects in unity usually become playable after a few weeks of slow development and playing around in Unity, so i think someone else would've expected this to happen lmao. Though, the concept of the game for this Jam, although overscoped, i'm still developing it and i'll upload it to itch.io when i finish, since now i don't have to rush all the content.