What do you think changed since the match against Liverpool?

I have noticed that from the match against Liverpool till now the gameplay is totally different from what it was since xabi's arrival. I think from the cwc we could clearly see the changes xabi brought and from there despite 1 or 2 arguably bad performances the team was actually getting better and better .But I don't even think it was after the Liverpool game that things got bad. From the the start of that game till now we can clearly see the gameplay is very different . No more chemistry nor perceptible game plan . All the progress the team made seems to have collapsed.

What do you think is the reason for this ? I'm curious to hear what people think about this as it doesn't make sense to me .