I've left another comment like this to someone else, but just want to say to you too, stick around and keep doing jams! While this jam might've left a touch of bitterness on your tongue, you sound like you worked hard, learnt a lot and came away satisfied with what you achieved. That's a 10/10 score for game jams! Most game devs start a lot more projects than they finish and this leaves them lacking skills from the "finishing" side of things. Because of the enforced time period, jams are a great vehicle to perfect those skills while also not being locked into a project for months (or years, as the case may be).
Things like scoping, UX on the completed gameplay loop, options menus, audio, etc, are all skills that at least some devs leave till last (and consequently don't get around to doing for many of their projects that they don't complete). Hone these skills with jams as often as you can! It'll make any bigger games you work on seem much more polished, as you won't be attempting those "left till last" things for the 1st or 2nd time (or however many completed games you've made), but instead the 20th or 30th (or however many jams you've done).
This stuff alone is worth entering jams for, completely ignoring and prizes, recognition, or even people playing your game. So it's a good idea to keep doing jams, even if the occasional one doesn't go quite as you expected =)