If I do something on the handles checklist and am still struggling after doing it 4 times for 20 minutes what should I do.

I’m currently a freshman and I’m pretty skilled besides shooting which I’m working on with Mike Dunn. My main issues is that I literally don’t know what to do when playing in games do lack of experience. Also I’m unathletic so I’m doing Nathaniel Morton btr1. So my main focuses are athleticism, playing well in real games, and shooting. How should I set my training schedule.