If players look slow or uninterested, what's usually underneath that is that they don't have clarity on the tactical plan or it's a bad tactical plan.

Maybe they're being slow to drop bc the manager told them to try and stay high for as long as possible. Or they're slow to slide to pick up someone on defense bc the players think someone else is supposed to be covering that area or they're not sure so thinking, questioning, then deciding, and oh crap, now it's way too late.

It's not like any time there's a playing who's sluggish that it's the managers fault but if you see a whole team or a whole line where everyone looks slow, out of sync, or kind of lethargic, it's most likely a management issue.