Anxiety

Hi,

I am an MBA student from India. I have been having a lot of anxiety. I couldn't even speak in class. During presentations, I was talking with new people and everything. I have been trying to speak more, but something is stopping me. I am unable to raise my hand or ask questions. I have been trying everything, including anxiety medications and Therapy, but everyone is telling me to participate more and otherwise, I can't bring a change. I have been trying, but I can't. I will think like (I am an overthinker) , what if they humiliate me, what if they laugh at me,, what if I come around as an Idiot? During my school days, I was like this. I was a topper for most of my life. Still, this fear is holding me back. What can I do?