Oh OP, I was in your place 2 years ago. It gets better. It just takes time, more time than you would want it to take, and the willingness to sit with your emotions, as hard and uncomfortable as that can be. It is not an easy thing.
My anger was so strong in the beginning, I couldn't sleep and I would just ruminate endlessly. So I ran, regularly, practiced self-care, allowed myself a period of time each day to be angry and ruminate, and then I would distract myself for the rest of the day. Therapy helped a little. I also got anti-depressants that helped my anxiety (I started having panic attacks, and was not an anxious person). And then over time, I noticed my anger lesson and I stopped ruminating. It just slowly went away.
I am at the forgiveness stage now. I don't know if I can completely forgive, but I hope I can. I certainly do not have such strong feelings when I think of the people who hurt my family and I so badly. I can get angry when I think of the damage they caused, but I get over it quickly and I don't dwell. The experience stays like a scar, though, so you may never be the same as you were before.
All the very best, OP, and be kind and patient with yourself.