No-one has said your dn is horrible, Iliveinalighthouse.
What people have said is that you should have supervised your dn better, so that he didn't queue jump and get in other people's way, and when he did get in their way, you should have apologised for not catching him in time and stopping him.
And you haven't answered the question a previous poster asked - if, when he got in the man' sway, the man had accidentally hit him with his golf club, whose fault would that have been? Yours, for not keeping an eye on him and keeping him safe, or the man's, for not being able to stop his golf club in time when a totally unexpected child appeared in front of him?
I am willing to bet that, in that situation, you would still place 100% of the blame on the man, for not being able to control the laws of physics, motion etc, and for not seeing in his crystal ball that a child was about to appear, and would not see that it was, at least partly, your responsibility, for not keeping your dn safe.