Push yourself out of your comfort zone one step at a time. I used to make my mom and friends order my food because I would stutter so bad I couldn’t get the words out. Start small, try it at drive threws so you don’t have a too look at the person you’re talking too I found that helps. I still slip over my words and become stuttering Stanley quite offen, but the more I’ve pushed myself the less I’ve stuttered, now I almost enjoy talking to people while I’m ordering or paying for something. Also the more you act like it didn’t happen the less people acknowledge it. Good luck man.