My experience at university with a stutter

My experience at university with a stutter 19M For reference, I do not want this post to be another complaint as I truly want to fix my life and fix this problem that has been going on for years. Luckily , I don't stutter with my friends , family , or a girl I like but whenever the teacher starts telling people to answer and I know that I will be up next in a few minutes I get an overwhelming amount of anxiety, I start to feel extremely sleepy , I forget things and I want to get out of that room as soon as possible. My first problem was in the last semester where I agreed to present a project infront of the class and I stuttered extremely hard and everyone started laughing , although the teacher was kind enough to mark me with a 10 , (A) for americans. I've been starting to avoid classes simply because I do not want to present , but hiding from the problem will obviously make it even worse , teachers always tell me to "just be confident" , "it's okay if you stutter" , but I can be the most confident man on the planet and still stutter as it has nothing to do with confidence and the teacher will simply pressure you (which I can understand to a certain extent but they probably do not understand how a stutter actually works. I have been to neurologists , psychologists, have tried certain breathing tehniques to fix this problem and nothing has worked. I genuinely feel like a failure , I am tired of my mom asking me how my day went and I always have to lie and say that it was good. This feels like a battle I simply cannot win no matter how much I try. Any advice would be greatly appreciated