Nah, it's fine. You did your best. And that's great. You're still miles ahead of those that didn't even try. There is nothing stopping you from making a post-jam version and making it even better.
That is what game jams are for :) Figuring out what works, and what doesn't. What you need to work on, and what you're good at. Managing time, and working effectively; creating your own workflow.
