very difficult situation. Trying to find a place to go or something to do away from the others worked for me. I went to the dark damp basement and read using a flash light to escape the chaos in my home. When I was allowed to leave on my own I spent a lot of time at the public library. Somebody I know used to climb a tree and hide with a good book. It is really difficult if you live in a small place with many others. If head phones don't work, maybe ear buds or soft ear plugs will. Playing your favorite music in your own room ( it sounds like you do have that, I had to share with a sibling ) or doing other things to distract yourself (reading, playing video games, watching a movie or tv, drawing or other crafts) can sometimes help because hyperfocus helps lock out every input but that which you focus on.