The first (and pretty much only) time I played D&D I didn’t know what “metagaming” was and accidentally thought about the puzzle as myself instead of as my player. Apparently the DM wanted justice and I ended up ruining the session for everyone. Needless to say I didn’t go back out of guilt

Moral of the story: please try to be patient with your players. Not all of us are great at avoiding metagaming immediately :\