It’s probably wearing to try and give a shit when giving a shit gets arguably the same result as not giving a shit.
Asking the team to run around the defensive zone for no reason and getting bad results only encourages players to get discouraged. Telling them it’s their fault and they need to play even harder is even more discouraging.
Then when a player does what they want instead of the system, and it succeeds, only encourages more cowboy play and more discouragement for playing within the team.
It’s tough to give 110% when you don’t believe in what you’re doing, even if you’re trying.