I'll just be honest, as an average person who isn't really into the art scene but will occasionally buy something cool looking to hang.
Your artwork is really great, however it is massively depressing and if I hung it in my house it would torment the shit out of me never finding a moment's peace from having to think of literally everything I just want a moment to not think about when I'm sitting here staring at the TV or something.
Maybe... try painting something evocative of literally anything besides the most horrible sentiments that live in the back of our minds.
Not saying to stop doing what you're doing, its your outlet I suppose, but maybe let out some other stuff too... might just sell a lot and get people more interested in what you're doing, then, maybe, they can appreciate some of the more, uh, delicate subject matter later.
I'd suppose an artist needs to feel like someone you can connect with on a personal level, and to be honest, nobody wants to connect with only the bad in a person. That's pretty much the only thing you ever show anyone, ever, though... Not sure why. Defense mechanism? Won't help, been there.
Don't you have anything happy in your life? Anything you care about? What makes you smile etc? Try focusing on that for a minute and show the other side of the story of you.