Yes it is. Deep down it is.
Well not Pickford , keepers are keepers.
But generally yes. A good manager coaches his players for entire games. So they know nwhat to do and when to do it. Pep had his Barca team passing and moving 3 steps ahead from each other. So they knew where to go and who to pass to. That's good coaching. Klopp has turned a meaningless team with the addition of a couple of players into a team looking like being one of the greats , already with a European cup behind them. That's good coaching.
Heads dropping, no away performances, defence not knowing when to tackle and when to back off, that's the manager. That's what he should be coaching. Gomes should know what his centre halves are doing so he can judge to make the tackle or not.
That's coaching , that's why teams are successful and most aren't. That's why the teams at the top or the table win no matter what, because it's ingrained into them.
So when you keep losing, it means you lack that mentality. We should be losing the odd game , we aren't a top team. But to keep losing them? That's down to Silva. It's always in individual error, avoidable goals , switching off etc. Always a pattern.