I can't coach, but it's ok, it's my players fault, they're...

I can't coach, but it's ok, it's my players fault, they're just not producing. I can't get on the court for them, they have to get it done, there's nothing that I can do for them. Coaching is done in practice. Plays just don't matter when it comes to game time if your players cannot complete them and I can ot draw them up. Why should a team trust in me when I cannot coach?