Gomez doesn't concern me as much as he's 4th choice at CB and has come in from the cold and been totally exposed. Sure, he could have done better in moments, but the whole defence had very little protection.
The bigger issue for me is about the balance of the team. We've totally lost it recently.
Diaz doesn't give us the same threat Mane did, or have the same defensive protection Mane did, as evidenced in the CL final where failed to cover Robbo who lost the ball going forward for their goal. This also means we need more threat from our CF. Bobby gives us nothing at CF, but nice touches here or there. We can't play with him as a false 9 anymore without a CF in front of him. Nunez has good movement and could get a lot of goals if only the man could trap a ball and strike it cleanly. I sense he will get into many goalscoring positions when played, but fuck it up due to a poor touch/finish.
Also, the right hand side has been completely unbalanced by trying to play Elliot as mentioned previously.
Even we had Konate there (who is a beast as shown in CL final), he's being asked to do too much defending when Trent, Harvey and Mo are all forward.
Moreover, I love TAA but he's playing like a half-arsed mong right now. The man can't even be arsed to run back. He needs to be either moved into midfield or dropped until he gets his act together, and fast.
I think a quick fix is to switch to a 4-2-3-1. Fab and Hendo CM. Diaz, Carvalho/Bobby, Elliott 3. Salah up top, until Nunez/Jota gets back.