The first reason is that the coach is conscientious. I don't think this should be blamed on the coach, because the coach has tried his best, and he has made himself better and tried his best to guide his players. I think the professor is very serious and responsible and has better guidance for his team members. He is not wrong and should not be blamed.
The second reason is that the coach is innocent. The coach did not make a big mistake in the process of coaching, nor did he let his guidance mislead his players. This is not excessive, and he should not be blamed, because it is not his fault at all, and it should not be criticized by many people, because he has done nothing wrong at all.
The third reason is that the players themselves are not performing well. In fact, those players didn't play their own strength in this game, and they didn't make themselves better able to win this game, so I don't think the coach should be blamed.
In a word, I don't think the coach should be blamed.