No worries I totally understand ! I'm fairly new to this too (I started learning godot last winter, and jams this summer) and I'm really bad at balancing game difficulty so... I give feedback from a player viewpoint but it doesn't mean I'd have done better lol
And you're probably right about the game's length, I think I did make this mistake for my own game. It takes quite a long time to finish if you want to get to win the game and if people don't have a lot of time to test and rate the jam's games well, they're probably pissed at my game ><