With everything you have stated above all I can say is ignore them. Some pool players will make comments like that just to get inside your head to get you to start thinking about your stroke while playing. It may be the only chance they have of beating you.
Try this on those making the negative comments.
For example, I noticed while you were lining up the shot that your body alignment on the shot line really looked off, did you notice that.
They are messing with you, so mess with them back.
Nick Varner when he received a negative comment would just say "thanks, yeah I'm working on that".
As Earl would say, Pool is a beautiful game played by ugly people.
Have fun and enjoy your ride.
John