I'm such a retard I can't even talk

[Nemann]

Title, I can't hold a conversation without stuttering or tripping over my own words, happens not only when speaking with strangers but also with people that I somewhat know. After having a conversation I dedicate my whole day to review it and think word by word what I should have said and how stupid I must have looked by stumbling on my own speech without even being interrupted or rushed, geniunely it's obnoxious to the point I avoid any talk on a daily basis.
Any way to NTmax my way out of this? Thinking about schizomaxxing and speak out loud to myself and see if it works LOL