Hey I am very similar to you I think I can help. I started to stutter when i was in the 3rd grade and now i’m in the 11th grade so just 2 years older than you. I’ve been through everything you’ve been through and it used to make me feel the exact same way you’re describing. Having a positive mindset and staying positive about it is what can help you maybe overcome your stutter but it definitely helps with depression. The way I like to see it is that I’m kind of glad I have a stutter because even though it has put me through a lot of terrible experiences it has helped me to build a stronger mental fortitude over the years and to become tough. You have to learn to accept it and to live with it and maybe one day it’ll go away like it has for a lot of other people.