What if you had sooo many different shots that you don't have the time to practice them all?
Jack of all, master of none.
That's been my problem since my third year of tennis, as most of the better players explained to me. Work on a few options first, then add as you can if you have the time and inclination to practice the different options.
Since I have TWO different second serves, and hit to 3 quadrants each, that's lots of possibilities for mistakes!