>>11737087/lgbt/ is full of crazy, but not all gay people are crazy by default.
/r9k/ Is an actual crazy board.
People go their to bathe in despair, blog about being incels and trench-coat kids, etc.
/soc/ Let's not forget about what may actually be the craziest.
People who try advertise themselves, network with, and meet up with each other.
You have to be retarded or crazy to use soc.
So that would be my pick.