PTSD and Rage

Hello, I was diagnosed with PTSD a few years ago and I haven't been in a dedicated treatment program for it yet. I've come a long way and don't have nightmares like before but I'm still left with so much hostility. I get angry so easily and feel like I'm often on edge. There isn't a good way to avoid my triggers because it's half of the population. I don't know how to feel calm around large groups of people or men in general. I always feel like I'm gonna need to fight off some threat. Is there anything I can do in the meantime to feel less stressed/on edge?