College has destroyed the little amount of confidence I had left

College has destroyed the little amount of confidence I had left Wassup everyone! I'm 16m in college (in the uk) and today was one of the worst days in college. We had to read a presentation out to the entire class. A literal nightmare for me. I only had to read a paragraph as we was working in groups but it went bad. Before I started reading a person who I considered a 'friend' literally said to someone ' I bet *my name* is going to say *then proceeds to mock my stutter*. The worst part came to when I actually read the paragraph. I managed to summarise it down to one sentence but stuttered like 3 times and when I was done I could just see a few people smiling and trying not to laugh at me😭😭.