Fortunately this is only a game jam, and you can always do it better next time. I have made a lot of bad jam games, but I have always learned something that I believe have made me a better game developer. And I am sorry that the feedback activity is so low in the unreal game jams, it is sadly always the case. I have been in more 20 Unreal game jams, and I always have to pull players to play my game.