What a horrible start for Onana, to think he was one of the best goalkeepers in Europe last year.
The hype is what has gotten you disappointed so far. Before he moved to Manchester United, there was plenty hype with the news, but what do the fans really want? for him not to concede even with Manchester Uniteds.poor defence? he is not super man. Onana is just a good keeper with extra passing ability which sometimes becomes a problem also for him, a little wrong decision making in his position which is always a critical one can put his team behind.
There is little to nothing that the goal keeper can do when the defense is poor the Manchester United 18 line was left losed all throughout the game and that give the opponent the chance to make source forceful goals attempt to the foal keeper who was helpless at that point.
So not matter how good the Manchester United goalkeeper is, he will definitely not be able to stand the shots from an unchallenged striker since the Man U defences were already broken.