“Sorry if it is all over the place, but I hope someone can suggest me ways to deal with this crazy situation and advice me on how I can keep my sanity intact. I just want to live a peaceful life far away from them doing a job I like.”
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Hate to say it but you’re not going to have peace until you move out.   You can’t change them now should you waste your energy trying.   I’m not going to write 15 paragraphs because it comes down to this:  You need to get away from them.

Stop acting like you need to sneak around about leaving.  You’re a grown adult. Take responsibility for your situation and MOVE OUT. You don’t need to answer to them why, how or when?

JUST DO IT.