First, don’t tell me that the answer is just to “not bottle things up”, because that’s objectively incorrect too. Society doesn’t want you to have any negative emotions. I need to know how to not express negative emotions at all whatsoever unless I’m alone. I know it can be done because it is done in many other people on the planet.
Edit: Ok so I think one of the things I want to try doing next is ask for a med change from my psych provider.
Sounds stressful for you and for the folks around you.
I think you’re going to find that most people don’t have great advice for how to do it because it’s not something they’ve struggled to overcome. There might be people here who have that issue or one similar enough, and overcome it, so they can tell you how they did. But your better bet is going to be to look into some kind of anger management techniques.