Trying to think constructively I think the confidence is so badly shot in the defence that extreme measures are needed until reinforcements can be brought in... So how could we change the mood a bit with what we have now.
Half the problem is our slow predictability, so if nothing else, some change of structure might buy us time.
Thinking radically...
Goal Keeper - Ederson's skilset only works if we are controlling the possession. Ortega is a miles better 'basic' goalkeeper so I'd bring him in straight away. He'd be No 1 for the rest of the season for me.
Defence - I'd drop the entire defence apart from Dias, I'd play the EDS/U23 defence ( with Dias ). The should know each other and be full of running if nothing else.
Midfield - I'd play KDB out wide and be telling him to fire in as many diagonal passes as possible from just inside the half way line and try and connect with Haaland who is making runs but never recieves the ball. Kev can't be box to box any more, so let him use the ball (like we used to!).
I'd play Grealish/Gundo as a 10 up the middle supporting Haaland. (We could also look at bringing back Delap for this).
Kovatic/Stones should be in the conventional holding MF role.
Bernardo/Foden should be given the licence to play Kova and Grealish.
Doku or Savinho to fill the last MF spot but they need to be more direct.
Will this happen with Pep in charge... will it fuck...