I totally understand! I have a marketing presentation in front of the directors and I don’t feel the best about. But I’m reminded about why they’ve hired me anyway which is because I am capable. You’re in your job for a reason. So firstly keep telling your self you’re worthy of being in those meetings and rooms. Secondly, try to remove the thought of people caring because most people don’t, most people are patient. If it’s a presentation you have the slides to help you if you have a blockage. If it’s just a normal presentation breathe after every word, even talk like a robot. Break down every word. Lastly, I’m not sure if you believe in God but I pray before I speak, especially in uncomfortable spaces. I ask God to calm every anxiety and for him to give me clarity. Let me know how things go or privately message me. God bless you