I completely get where you are coming from! I lived in a house like that when I was in high school. I did not lose my parents trust, they were just that way, un-trusting. It was very hard, and it's when my depression 1st surfaced. They were big believers in keeping any family business private too & never realized I was depressed, so I didn't get any treatment. I had to help myself.

I went to the school guidance counselor to help me. She arranged meetings with another counselor & I felt less invisible. They both agreed that helping me get up & out of there, via good enough grades to go to college, was the best course of action. I am so grateful that I had them.
My parents didn't want me to go away to college, but live at home & go

They said the only was I would be able to move away (I babysat & had a lot of money saved) is if I got married! Really Crazy but really true!
I used to exercise really hard to get an endorphin high, and it helped get me through many rough patches.
Try very hard to think if there isn't something you can do that will give you pleasure/some relief, like a sport or dance classes or some activity that will fulfill you (body & soul) & not make your parents alarm bells go off.

I feel for you. I know it is a hard time right now.