I'm not in a position to help your golf swing---lots of others to do that. However, I'm curious-----is the golf swing the only time your ankle hurts?? How about when you plant your left foot to make a turn to the right?? Judging by your responses on this forum I'm assuming you have been playing golf for a number of years. Did this just now start hurting?? Did you injure it perhaps doing something else and now a golf swing hurts it? I would try an ace wrap or a fancier device called an air splint and see if it helps. Perhaps Vickie or Physioguy have some exercises you can do to strengthen your ankle. Good luck!
Dr Dave