Oh, I have a similar situation. Except, now it is much better than it used to be when I was 20.
So the first thing you should understand is that they will not change. Abusive and manipulative parents will do anything to keep leeching off of you and the best thing you can do is to stand up for yourself. Do not allow yourself to pity them or think that they will treat you better at some point.
Fully reclaim your income, as it was already written. Prepare to see some performance but stand your ground.
As for the threats. My mother also used to threaten to end her life. Once I told her to proceed. And you know what happened? Nothing, lol. She went for a walk, returned in an hour or so, and (surprise, surprise) apparently came up with a new technique to force me to accept her conditions. What I’m trying to say is that chances are your dad won’t do anything to himself. But if you are worried, look up some emergency services. I’m not sure how it is in your country, but in my, it is possible to call a psychiatric emergency if someone threatens to commit suicide. In other words, such people usually shut up and cower when you take some legally proper action. Although I actually knew a person who cut his arm a few times for real. He was sent to the hospital on time. And after that never repeated the stunt because he got scared himself.
Do you have some friends who can help you in a worst-case scenario? If not, I wouldn’t recommend rushing and leaving your place for now. Your parents still can find a way to get you even if you are in another country, trust me.
You do need to get out of there, that’s for sure.
A few weeks ago I asked Lucifer for advice. And he delivered a wonder the next day. I don’t want to elaborate further as the process itself isn’t finished and will take some time, but now I have a very good way of getting rid of my mother once and for all without having to curse her.
And think about protecting yourself. That kind of communication takes a lot of your energy. There is a wonderful tutorial on creating a servitor. A servitor will not save you from your parents but he can prevent your energy from being sucked in my experience.
Be brave.
And one more thing I should’ve mentioned. NEVER tell them you are going to take action against them because it may provoke them to become aggressive.