This is fucking insane

This is fucking insane I am a 20 year old man trying to live my miserable life but I can't because of stuttering and I have tried in every way to hide this thing in me but it has literally destroyed me psychologically and I cannot communicate with any homo sapien without feeling helpless, humiliated and frustrated. Every time I go to a review at a government agency or go to college I suffer from the simplest things that a normal person does not think about. I am in mental torment. I have no friends or anything. Please, is there a relative solution to this problem? The problem is that I do not know its roots or causes.