No need to apologize. A lot of people use game jams as practice in the art of game design and that couldn't be the case if there was some arbitrary minimum standard of quality you are expected to meet in order to participate. As long as you learned from this experience, it wasn't a waste of anyone's time. But at the same time, I've played probably over 200 game jam games so it's hard for me to sound super enthusiastic about every single game I play. I just try to give useful feedback.