My stutter has destroyed my entire life, I dont know what to do

My stutter has destroyed my entire life, I dont know what to do Hello, I am 22 I have had a very serve stutter my whole life. When I was around 12-16 it was at its worst. I would dribble when I spoke, my throat completely locked up and I would block on words until I literally run out of breath. Since I left school where I was very badly bullied, my stammer is not as serve (no more dribbling) but I am not able to actually talk coherently with people. ​ I studied Comp Sci at university, I got a well paying job as a programmer. However I quit this job 5months ago, mainly because of my stutter. ​ The job was hell for me, my stuttering was so bad I had to type what I was trying to say on notepad. Which felt so degrading, and because I did this a few times whenever I tried to speak people would just prompt me to type it or write it. Which felt horrible. ​ I have never had any friends, I have never had a girlfriend. I really see no future for myself other than sitting in my house browsing the web or playing games. My parents are forcing me to get a job, but I cant put myself through that again. I am honestly worried I will end up killing myself if I get another job. ​ I have been to multiple speech therapy courses, I have been to therapy groups. No technique works for me, no mindfulness bull shit works for me, no drugs work for me. I do not know what the hell I can do, other than just sitting in my room decaying. If I could I would live off disability, but in my country (UK) stuttering is not a disability.