How do you have friends?

How do you have friends? The last time I had friends was 6 years ago when I was 12. How do you manage to have normal conversations? It's so embarrassing for me to stutter, and that's why I'm quiet all the time. When I finally try to talk and get to know people, they look at me strangely, like I have a brain problem. There are also nice people who don't mind it that much, but I still don't feel like I'll be able to make a deep connection with someone if I stutter. Do you understand what I'm talking about?