If Onana continues to make mistakes, then of course maybe Erik ten Hag won't include Onana in the main squad either. But maybe, because this is still in the preseason, then maybe Onana is still playing with big ambitions which results in Onana often being out of position. But indeed, I also still don't blame Onana too much because after all, we can't be sure whether Onana will still play like this or not in his debut later in the Premier League. But yes, if Onana continues to play in that way, then of course Onana will not be the first choice because playing him will only make blunders which will certainly be detrimental to the team.
I saw the goal was quite beautiful, it was quite clearly Andre Onana's fault who was too reckless with his own position out of the crossbar.
Remember that Andre Onana has always had this habit and he is too aggressive a goalkeeper sometimes coming out of the box which shouldn't happen.
You still remember that Onana was dropped from the Cameroon squad because of his behavior, the coach didn't like his behavior but somehow he had to realize that the situation was not good (I saw the news first at the world cup).