1. Move somewhere else.
2. Quit going to known dangerous locations.
3. Move somewhere else.
I'm sixty-eight years old and in my entire life I've only been in five situations where my life was threatened and I drew a weapon. In none of those situations did I have to fire. I've been in a situation where I had serious doubts as to what the intentions were of the other person. Found out they were crazier than the proverbial outhouse mouse. Still did not have to fire.
You're in the wrong neighborhood and, from what I could tell from your post, in the wrong line of work.