Hey first off: Please don't feel bad. The biggest difficulty with a game jam is making sure you get your scope right. If you try too much, it gets difficult. I have seen people who even fail to submit anything because they completely get stuck while developing. At least you managed to submit something in time
And everyone is on a different level of their game development journey. I personally have been making video games for literal decades now. Some people just started recently. It's all good.
I'm super happy to hear you are trying again in future game jams. The best way to get better is to keep trying and getting better through motivation and hard work :-)
I'm sure if you do this more and more you will get better and better. Just keep it up!