M16 I was at an ENT's for some reason when I asked them about my stutter, he said this

M16 I was at an ENT's for some reason when I asked them about my stutter, he said this He said, " it's because I have a very low self-confidence, there's no other reason why a child would stutter", i couldn't argue about that (because I can't speak more than 2 sentences while I'm frustrated), and talking to strangers is the hardest. I don't know if I should've asked an ENT about this but i still did because I'm very scared of stuttering for my whole life. I can't speak to people when I want to, if i want to ask something, I say my self not to. I can't even ask questions during classes and avoid talking to teachers, they usually think I'm depressed or have some kind of mental illness. Currently I'm not going to school due to some reason, are there any tips for me because I'm going to a new school after a few months and I feel scared knowing that I'd embarrass myself by stuttering, people will laugh at me, make fun of me and I'll have no friends.