You then begin to question why the players have made said braindead decisions and why they've lead to a goal.
Mourinho came out after the Liverpool game and said all of the goals we conceded were down to individual errors. But if you're going to invite teams, especially teams as good as Liverpool, onto said defence then errors are going to happen if we're not perfect.
Every single goal conceded is an individual error somewhere on the pitch.
The opening goal against Liverpool was a shambles. Davies keeping Mane onside. Aurier losing him. Rodon not paying attention. Lloris' lack of communication and not intercepting the poor Mane cross and Dier simply forgetting Firmino, who he spots numerous times, was near him.
What you have to wonder is why we were playing a left back at centre back (the guy who kept Mane onside) when we had no other left backs in the side?