Sarr is somewhat of an outlier as he covers so much ground in midfield and helps make it more resilient. Kulu is as close as you get to that in terms of balance, but he can’t play every minute in every comp. Ange seems to know this hence his proactive recent use of Sarr off the bench, and why we looked at players like Conor Gallagher over the summer.
This is nothing to do with formation etc. Everything is down to shocking amateur football basics (and they get paid 10-100s of thousands per week) ,
I agree that Bergvall is out of his depth tonight, but Maddison and Bissouma should be doing far more as the experienced elements in MF. They are both poor