I teacher with a good eye can really help and you don't need a lot of lessons to really benefit. (I smile to myself, because I probably had 7 years of coaching on and off, back in the day

).
A good teacher should also be able to maximize what you do particularly well because of your body type, strength, mindset, etc. We have to play the game that suits us.
I play pretty much exclusively on clay and I don't care how hard anyone hits the ball, pace is not the issue. A highly spinning ball stays in your strike zone for much less time, so I think what we're all saying is that you're already way ahead of the game.
Good luck and have fun. I'm sure you'll solve this.