I struggle with many of the same feelings, but I’m lucky and was able to make a great group of friends I’ve kept my whole life. I’ve grown away some from my friends because of my stutter and my anxiety socially, and I regret it. I’m in the process of healing and getting back to the person I want to be. My advice would be to focus on being the best version of yourself. Take care of yourself physically and mentally, read books, journal, etc. good things will start happening. Don’t give up, feel free to reach out to me if you ever need to talk and change your perspective on this a bit.