@M_P90 I'm not sure I have any answers for you but I would like you to know that you are not alone in feeling the way you do.
I also have CPTSD from growing up in an abusive situation. For the longest time, decades and decades, all I ever wanted was to be 'normal'. But trauma changes you. It just does. There are some things I don't think we ever get over, and I'm not even sure we should. All we can do is our best in each moment. There will always be good days and bad days. There will always be triggers.
There is hope. Slowly, sometimes very very slowly, things that once triggered us, don't do so with quite the intensity as before. And then there will be days when they trigger us badly. It's never a straight line.
One thing I have tried to do with myself is look for the blessings. I am not normal. As a recently diagnosed autistic, I will never be 'normal'. But that's just fine with me. I don't actually think I want to be anymore. There are things that I can appreciate that most others would not even recognise. I am sure if you look for them, you will also find things about you own life and situation that make you special in your own way. Yes trauma sucks. In a perfect world it would never exist. But it does. And there will always be those day that we sit in our cars crying. And I am so sorry for that.
As far as the disability goes. I know that feeling only too well. I have never been able to do what others can easily do. I look perfectly normal on the outside, and yet there are so many aspect of life that leave me feeling completely disabled. Finding out at age 55 that I technically am disabled was both a blessing and a curse. And I heard the world 'disability' described to me this way.... the world the way it is set up right now with societal expectations etc, dis-ables those of us who don't quite fit the 'mould' of the social-media driven model of perfection. There is nothing at all wrong with us. We are probably some of the strongest most capable people you will ever meet, cause frankly, we had to be. But the world as it currently is, is not allowing us to shine for who we really are. And we have so much to offer. Our life experiences have taught us strength and compassion and a sense of justice, and much much more.
Hang tough. And if you need to sit and cry in the car, then sit and cry in the car. No shame.