Why is my mom such an invader of privacy?

My mom literally doesn't respect my privacy. She doesn't let me close my room's door, she literally opened my Instagram to look at my chats with my boyfriend, showed them to my dad and caused an argument !! She even takes screenshots of my chats. Also, she takes her anger out on me every single time. And she thinks she has the right to do this, as she's my parent. Right now, i really wish i had a different mom. I don't even wanna call her my mom anymore!!

Why is my mom such an invader of privacy?
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