Before you blindly copy and use an exercise you see on YouTube, take a deep breath, pause and think. Ask yourself what is this exercise or drill intended to do? Is it better than something I am currently doing? Why?
If it is a strength exercise is it isolating a muscle or coordinating movement? At the end of the day there is no limit to the number of exercises available, but will the exercise make your athlete better or just make them tired. It has taken me a long time to learn to hunt with a rifle instead of a shotgun. Be on point, think sport and movement appropriate, understand muscle function and learn what works in your system for your athletes.