I play football and as a much younger woman, we did have a transgender female in our team. It was an issue at first and players did complain, not about the fact that it was completely unfair which it was) but they felt uncomfortable in the changing rooms. However there was nothing they could do about it so we got on with it and did get used to it
So young women were forced to use their bodies to provide validation for a man's claimed 'women identity' and basically told to put up and shut up.
They could have collectively refused to get changed in front of a man.
The coach could've told the man to change somewhere else.
Or, even better, the man could've fucked off and played on a man's team.