Well, what’s happening is that the kind of ball handling Coerver drills you can do on your own are pretty much limited to ball handling and 1 v 1. It’s great for little kids because they aren’t going to pass anyway, so they may as well get good at playing keep away with the ball.
To practice the more complicated Coerver passing and receiving drills requires a bunch of skilled players and a coach who knows how to run those kind of drills, basically an academy level team and coach.
It’s why I say kids need to do tons of individual Coerver drills and play as much small sided pickup games as possible to develop their ball mastery and 1 v 1 before the best of them enter academy. Once they enter academy there will be more emphasis on passing, receiving, finishing, shape, etc. There won’t be enough time to catch up on ball mastery.