Of course, it's Manchester United, but to be honest, their performance in the first half was pretty poor. We realize that Onana wasn't doing well because Bayern scored the opening goal, but at least, Onana was obliged to try to catch the ball.
Even though Onana's performance in the first half didn't look good, I don't think Onana deserves to be blamed because in general Bayern Munich is trying quite hard to win at home so they are trying to take the lead as early as possible in the match. If you look at the total score for their match, it is worth saying that their match was quite fierce even though Bayern Munich was ahead in the number of goals compared to Manchester United.
But the second goal was the defense's fault since they didn't hold their position well. But I still have optimism for Manchester United in future games because I was happy with their effort in the second half even though I didn't think they would be able to equalized even one score.
Mistakes like that often occur and occur in a match, but they can still be corrected for the next match because Manchester United can make an evaluation of such mistakes before they play their next match this season. Defeating by a score like that is not so embarrassing for Manchester United because if they win at home to Bayern Munich, it will actually shock everyone and Bayern Munich will feel embarrassed in front of their own supporters.