In my opinion since i’ve struggled with a stutter my whole life, i can tell you it gets better as you grow up and the more you deal with people the more you know how to handle your stutter. I am not saying you won’t have bad days or feel like shit sometimes, But eventually life will put in you in the correct place and surround you with the right people (either as in friends or relationships), the only advice i can give you when you have phone calls or interviews is simply tell the other person that you have a stutter at the start of the conversation as that kind of relieves the pressure of having to talk fluently, i know it’s socially awkward and not as easy as it sounds but we just have to adapt according to our stutter. You will meet a lot of people (friends and relationship wise) that don’t care about your stutter and it doesn’t really bother them and as you grow older you’ll gain more confidence in social situations. I wish you all the best