Unfortunately I think that is simply a case of weak willed players. Today we only needed one goal to get something out of it, as we did at Newcastle, but we just never looked like doing it.
If you want to see what should happen when a team gets embarrassed in the first half, watch the Arsenal Leeds game tonight. 4 nil down just after half time, they kept playing and had a right good go, lost 4 - 2, but they never stopped trying. They'll give us a hell of a thrashing in a couple of weeks if we don't find some bollocks from somewhere.
We can point at VAR all we like, but it's up to us to create more clear cut chances, put them away, and take VAR out of the equation. No moral fibre and sleepwalking to the Championship.