Agree with Budfox: why should you spill your guts to some stranger?
You have tried therapy and it hasn't worked, but somehow you should keep trying ? for how long? Months? Years? Why?
I'd say trust your guts: you haven't found it helpful therefore it's not helpful. And not because you were not trusting enough. Not trusting random strangers is basic common sense imo.

I haven't found therapy to be helpful for depression either.