Not all therapists are going to be good. I think it's more beneficial to find someone who can leave personal bias and beliefs behind, and help individuals and familes with their goals. Good therapists don't bring in their own personal thoughts or ideas, but help the patient clarify internal conflicts.
Saffie, I understand your experience of feeling relief when your parents split up. I felt tremendous releif when my parents divorced too. My father was abusive so it was necessary. Nevertheless, I've come to realize how profoundly this affected me. And it's something I never realized or understood when I was younger.
There is no arriving, ever. It is all a continual becoming.