Police Protection While Leaving Parent's Home

I am a 25 year old male guy, unmarried, working, and financially independent. Ever since childhood, I have been a good student and good habits. My mom had a secret relationship with a guy and at that time I supported them because Dad was behaving rudely and was bad. I thought they were right and always listened to them. Sometimes faced emotional torture and blackmail but controlled them. I also have stress issues and heart issues and they are giving me a lot of stress all the time. I always supported them in every matter. Recently, I told them that I have a girlfriend. She is a good person and no bad habits with a good family, much better than ours. But they started behaving weird for many months and they are not accepting it. They are also blackmailing me with false accusations and threatenings to me that they will take action. This is the same thing they did to my Dad who is no more and my brother who is thrown out of the house. But now I have decided to move out of the house but they are threatening me and they might make big drama or even kill me. I kept quiet all these years because my mom has arthritis but now I came to know that even my mom is behaving like him. They are very smart in terms of law and can put false accusations like my mom is 56 years with arthritis or some property issue blame. I don't even have proof of their emotional blackmail also. I would really require someone to be there with me when I move out of the house to protect me. I might even die due to this amount of stress and heart issue if I don't move out. I don't want to take action against them because they took care of me but I will take action if they take false actions on me. I just want to safely move out of my parent's house with my belongings and maybe later they might understand me and my feelings. Can you please let me the legal steps for moving out with my belongings and if police can be available to be there for 1 hour till I am gone?