I feel like I'm trapped in my mind

I have so much that goes through my mind daily. I struggle with really bad PTSD from my past, and it really affects my life to the point where I can't be normal. It's especially bad when night time hits. My mood changes almost instantly and my mind goes to a weird and uncomfortable space.

What makes it so hard is that I can't afford therapy. Medicaid doesn't cover it, and I definitely can't pay out of pocket...

I've tried talking to my SO, but he gives me a very quick answer, hardly listens, and just brushes it off??

When I talk to my sisters or friends, they either don't listen or they make it about them and the conversation gets turned around

When I have talked to my parents they don't really know what to say...

I literally feel like I'm going crazy in my head. I know the only one to solve it is me, but I need guidance crazy bad. I need help.