It's not great when the 2 games you name were against the scum, who are perhaps the worst defending in the league (very enjoyable though that game was) and Everton, which we would have drawn apart from the shocking refereeing. Sporting away was an outlier because we took chances that would be missed 9 times out of 10. And Norwich? Well that proves nothing.
I am not really looking at the score lines either, it's how we've been playing. We keep the ball better than any other team (although have been atypically sloppy in that department) but it's all been a bit too slow and a bit pointless with little goal-threat and few chances actually converted. It's been sub-par for weeks now and anyone who is not a happy clapper can see it.