Many here have suffered as you have been suffering, we've "done that, experienced that". Yet the good news is that we persevered and came out the other end of that dark tunnel and life is better now. Maybe not perfect of course, but life is much better.
One skill we emphasize here is Boundaries. While boundaries cannot be enforces upon other people,
boundaries are our appropriate response to the other person's misbehavior. This can serve to limit the damage the other can do to us. Granted, boundaries don't undo all the damage a seriously disordered person does, nor does it fix them, but boundaries do help protect us.
You are NOT alone. The peer support, though remote, is oh so helpful in addition to whatever support you have locally with family, counselors and your lawyer.