Hey buddy, not sure what to say tbh. You need to get people to stop taking the piss. You said you was 20. You have a stutter, it’s annoying, it’s not something to be mocked about. The main thing that helped me was to just embrace that I stuttered and that it doesn’t matter. I need to talk to folks I don’t know. I tell them I stutter and move on. A helpful exercise I did on a course once was to ask as many strangers the time as I could within an hour. You soon learn people don’t care about your stutter. Really helped put things into perspective.