Manchester United's problem is not just Onana, it is deep. In their first games of the season, it was Bayindir's blunder that gave Arsenal all three points. In their match against Fulham, they didn't play well and Fernandez failed to convert a penalty kick that would have been crucial to them sealing a win, and yesterday they were knocked out of the EFL Cup by a fourth-division side. Things just keeps getting worse. Even Amorim admitted after the game that changing the whole 22 players won't solve the problem. It looks like he doesn't even know what to do anymore.
There defense is bad and with the fact that onana is not good enough makes it very important for them to work on there defence Bayindir might have committed a blunder but there is no one that is not above mistake. And arsenal shows dedication throughout the game. And a lot of people were blaming Manchester United because for losing that game. And they are doing everything to be better because I can not even remembering Manchester United winning any game yet. And the only they are left to focus on is the premier league and I wish them the best because with what they are playing they might not go far.