It sucks they violated your privacy, but there's nothing wrong with therapy. Did it for a couple years myself. Good to get it out and get someone else's perspective on things.
Of course, I did that on my own volition. It would've been better if you had that choice too.
That sucks. Parents don't understand what privacy means when it comes to their children. My diary/journal got exposed by my mother in front of the entire family. That memory just got into my mind by reading your comment. Time to forget it again. 2024 resolution is to try keep things written down again.