I think you're completely wrong. Graphics are not that important at all in a game. For example look at Undertale, does this game have insane graphics ? No, because a game is much more than just images on a screen.
You should think a lot about that, change your mindset. Making games is not about who wins a game jam but who learns the most and who will make the best games afterward. You can give bad reviews, still it will not make your skills better.