Coaches do practice. Managers do training. Pep isn't showing KDB how to trap the ball or how to head. Is he? To your point, changing players and tactics is m

Coaches do practice. Managers do training. Pep isn't showing KDB how to trap the ball or how to head. Is he? To your point, changing players and tactics is managing. They are trying to maximize results given the resources available. There's no time for coaching at that point.