Just make sure your family is really negative. Only you have the answer, but this may be the case.
I struggle since decades to detach from my family. I slowly progress and every year I feel more "free", in steps.
I am not the most expert on here, but I have quite long experience here.
A first, important, step is to establish your own independence, live in your house far from your family, have a job, a form of self-sustainment. If your family is really negative and abusive, if you are in a weak position they will probably try to keep you under their roof.
There is somewhere a possibilty, a job to relocate, or even a place where to move. In this case, detachment rituals will be much more effective removing links without a daily emotional contact with the undesired person, is much easier.