I think the biggest misconception about therapy is that 'someone will tell you what is going on'.. I read often that someone is expecting their therapist to tell them they are trans or non-binary or something.. That should be a red flag, if a therapist TELLS you anything.. run.. run fast and far. For they are not a good therapist.
Therapy is a tool, like a hammer or a screwdriver. You need to use it to create something, to discover something or to mend something. The therapist should be like the tutor, teaching you how to use the tool and how to get the best out of it. If you decide you don't want to 'go there' or explore things in your darkest recesses of your mind.. then you will never get a full picture of who you are and an idea of the way forward.
In this, trust in your therapist is probably the most important factor, in my opinion.