I used to get very nervous for presentations or even speaking up in a meeting for the exact reason you gave. The honest truth is that forcing yourself to do as

I used to get very nervous for presentations or even speaking up in a meeting for the exact reason you gave. The honest truth is that forcing yourself to do as many presentations as possible is the best way to build confidence and ultimately kick the fear. For me that came the hard way when transitioning from a strictly product role to a customer facing role where I had to be “on” every single day in customer calls. Eventually you realize that even your mistakes aren’t the end of the world and they’re truly nothing to be nervous about. One small trick that helped me in the beginning of that change was typing everything I wanted to say multiple times without over practicing