Hello friend! Sorry to hear the game jam was a little too anxiety inducing. But for some perspective, you are in a short jam and solo with not much development experience going based on the 120hours. I wouldn't be hard on yourself at all just because you weren't able to finish your submission or get it fully within the scope you envisioned. Jams are about experimenting and pushing yourself outside your comfort zone, it's okay to feel anxious about it and its okay if it doesn't work out. I encourage you to try some longer form game jams (7+ days) where you can really take your time and flush out your ideas.
I mean heck I have who knows how many hours of dev experience (a lot less in game dev though) and I still struggle to make game jam submissions that are passable as games! The fact of the matter is learn from it but don't let this game jam define your view of game jams. Keep taking risks and challenging yourself, its the best way to improve your craft. For now take a bit of a rest and then come back stronger. Good luck :)