They have won. No one cares about my PTSD or my suicide attempts or my alcohosm.
I have no one to talk to about this but I really need to get the infection out of my system because it is killing me.
Maybe they do care about you, but they may not have the skills to provide you with the support that you need. If you are talking PTSD (any reason why you call it that?), we are talking about a condition that is treated by people who are professionally trained to help patients with it. Unless your family is made of psychologists, psychiatrists or clinical social workers, they just can't have the skills to provide the help that you might need.
Have you reached out to any mental health professional? If not, I'd suggest you try. If you have, please tell your mental health professional that something might not be working.
If professional support is not an alternative to you (sometimes it's just not available or affordable), the next best thing is trying online support groups, such as the ones you find in a place like Daily Strength (not endorsing it, just suggesting it).
If online communities don't cut it, try reading some literature on the matter. There are plenty of self-help books that can be useful.
I hope you find the peace you might need.