Agree with all the above. Go for a trial lesson and see what you make of it.
Regarding speech, you will probably find it easier than you think, exactly because there are 'rules and regulations' for what you say and when you say it, once you know those, you'll be expecting to hear certain things and able to hear them, as well as ready to say a couple of things when they need to be said.
If confidence is an issue for you, unlike a social setting, where there is pressure to think on your feet, saying things on the hoof and following the conversation as it drifts around, talking on the radio is far easier with a lot less pressure on you.
On a related note, learning to fly will be a real confidence booster. You'll be doing something which to outsiders appears difficult and unusual. Only you will know how easy it really is
And it's a lot of fun to boot
B.