Well, it seems like you have a good BS detector. I would still go to chatgpt and ask for “what types of psychologist approaches are there to sadness”. It will then respond with " behavioral, cognitive, etc") then I would ask what would a therapist for each approach say to a person who “is sad, and other characteristics and circumstances of yours”. Then pick the ones that you haven’t tried or you only did halvsies the first time you tried it.

Good luck!