Get propranolol, it will atleast reduce the physical problems when being nervous during social situations.  If you have the time and budget, get a vr headset, like meta quest 3, to use vr simulations to practice speeches or chat with strangers in vrchat. You might need to be alone in a place so you feel more comfortable though.  Use the app character.ai to practice phone calls.  I avoided all social gatherings while in college but if I was not a stutterer, I would still avoid them since I dont like going out much. However, i did wanted to be good socially at one on one or small group gatherings for class projects, but I never had the time to focus on myself and stuttering.  My tips should atleast help you to get used to the environments of social gatherings or situations