I think you should try mental health therapy. It sounds like all these feelings may be combining and making your stutter worse. I can have a pretty bad stutter at times, making friends is entirely possible, and even having a girlfriend. Sometimes it takes a few tries to find people who can look past you stutter and see who you truly are. If you ever need someone to talk to please send me a message, as many others, I can only empathise with how you feeling.