There's nothing wrong with the system if you have a team that can retain possession, however when you lose it your defensive players are left on their islands and are individually not good enough for that, whilst your CMs are out of position. City could play Brighton like that and take them apart as they'd have retained possession and pushed their centre backs really high removing that 40 yards of space Brighton utilised for the 2nd to 4th goals. They'd have taken their chances if offered them like we were in the first half. Villa try to do the same thing with their centre halves under Emery with varying results.
De Zerbi saw that in the first half and instructed his team how to take advantage of it at ht. So although you could say those goals were down to individual errors we were set up for them to capitalise on them. Brave for trying it or naive for thinking we'd keep the ball as required depending on your take.
Basically you're saying, we lost possession and they hit us on the break, and our defenders are not good enough to cope with that.
The onus was on us to win the game as we were at home.
We did similar to Man U at Old Trafford - (only we couldn't put the ball in the net).
We could have resorted to Lopetegui's way of playing, when we had Neves, by passing it backwards and sideways between Neves, Dawson, Kilman etc which would have less risk, not good to watch but percentage wise safer.
We wouldn't create many chances, or score many goals, but we'd be 'in the game' for longer (until we went behind of course and had to chase the game).
Who scores the first goal is vital in the game these days.
Last Monday and on Saturday we had chances to score and didn't take them. If we had, the games take on a completely different perspective.
Improving in that area is the No. 1 priority for me.