Just out of curiosity, were you using gyro only and the sticks or just the gyro, to aim? I've always found using a combination of both to be the best way.
I was using the combo joycon + gyro one with the joycons in the grip. I didn't like it because I felt like tiny twitches and movements of my hands were throwing my aim off and if I changed position it sent the whole thing out of whack.
When I get the full thing I'll properly devote some time to learning Gyro but only if I feel gimped using the pro controller. I couldn't afford one this month so waiting till payday to get one! Will try Pro no gyro first as I'm generally very comfortable with aiming using standard dual stick controls.