DBT Group Therapy

I told my therapist in our last session that I don’t really think therapy is working for me because I’ve realised that the purpose of therapy isn’t actually what I was hoping to get out of it. And my suicidal ideation has gotten a lot worse because of it. (I wanted therapy to fix me and fix my life. But I realised recently that the purpose if therapy is just to accept yourself the way you are and to learn how to settle for less)

Anyway, she suggested a different style of therapy may help (which I very much doubt because all therapy is pretty much exactly the same) and mentioned DBT Group therapy? What the heck is that?