I have had payed instructors in the past but I was already competitive before I had enough interest in seeking them out.
Competition of some form would be my suggestion. The shooting sports, isn’t like motor sports, the good guys are always ready to share a tip or trick, so you can learn a lot just by talking with the guys you want to beat. Then there are things you can learn from simple observation. Even before gun games were a thing around here I converted a wrist watch so it provided a “beep” start and built a plat rack so when the last plate fell it stopped the clock and locked it up, until the plates were reset, taking the human element out of the timing.
It was quite crude one button started the stopwatch, the other sounded the buzzer both were tied together at the top and the switch on the last plate connected to the RCA jack. It did however give a positive way to test various guns, shooters and techniques against each other and give quantitative values between them.
These days shot timers are common, cheap, and can give you more information, I’d start with one of them, so you can not only know what is faster but by how much.
You might need instruction to open your eyes to new techniques but even without it you can measure for yourself what is faster and what is not.
I took less than a hand full of classes from top shooters but I still managed to become good enough to place 1st master at nationals one year, a few division champions at other State and regional matches. Nothing wrong with paying someone but a class full of newbies wanting to buy skill, isn’t always the best place to learn. Choose wisely.