Learning to fly is hard, period. There are no shortcuts. It takes all your concentration. Your mental bucket fills up as you struggle to maneuver in 3 dimensions. There’s a whole internal conversation you carry on with yourself as you do the stick and throttle thing.
Now add radio work to the mix. Mentally prepping for, and making a radio call requires you to stop the internal debate you are having about how much pitch change it takes to keep level flight during a turn. Somehow, you have to quiet one part of your brain, so the part that makes the radio call can energize. It doesn’t come naturally.
Talking and flying is a learned behavior. It takes as much practice as learning to raise the aircraft’s nose slightly to maintain level flight in a turn. When the Aircraft Radio Simulator goes fully operational online, you’ll be able to learn and practice radio calls to proficiency.