Answer:
Public speaking is a skill; as such, we need to learn it.
Giving more speeches will help us practice and feel more comfortable over time.
Step-by-step explanation:
It doesn't seem very easy because when we want to learn a new skill, we try it out ( we might read a book or go to a course/workshop), but when it comes to public speaking you can't do that; the first time you're up there, you're actually up there.
You'll learn more from previous experiences every time you do it, which will help reduce uncertainties and, consequently, anxiety.