Ehehehe. That’s true. I overlooked the difficulty of the game.
As for what you said about other games, for many of us, it’s usually very hard to tune the difficulty after developing and testing it ourselves in a very condensed time frame. It’s like having a highly-experienced player who understands the ins-n-outs of the game playtest it. Difficulty tuning is definitely a skill that takes experience especially without playtesters.
I’ll try to learn from this and try to gauge the difficulty when developing games for jams next time.