Social anxiety. Group settings.

Does anyone else struggle with social anxiety? Especially in group settings with adults? I have professional meetings occasionally and I am always kicking myself by the end of it when I don't speak up and contribute. It doesn't help when you're online too. I just overthink about the value of what I have to bring and by the time I decide, yes I will speak up and share, someone else decides to butt in and talk over me so I dig myself a hole and never speak again.