Agreed here. If you want some room from the guy just tell him in plain speech that you are going to talk to him in a few min but need some time to focus on some things you are working on, he will understand and give you space or at least talk to you much less. I can see you are trying to focus and be better but lighten up, the game comes easier when you have positive vibes and only focus intensely a few min before a shot.
Bottom line, the guy tried to be nice and you were not and didnt explain why....even after the round you didnt ease up....