There are several websites on this subject.

Prindlepost.

https://www.prindlepost.org/2019/07/do-womens-soccer-players-deserve-equal-pay-for-equal-play/

SkySports.

https://www.skysports.com/football/news/11095/11660843/should-men-and-women-players-be-paid-the-same-the-sunday-supplement-panel-discuss

The Reddit site explains the economic problem about woman footballers pay.

https://www.reddit.com/r/unpopularopinion/comments/bb4slg/female_footballers_shouldnt_be_paid_as_much_as/

Here is another [this time American] example on the same theme.

https://www.washingtonexaminer.com/opinion/no-it-isnt-sexist-that-womens-world-cup-teams-dont-get-equal-pay

The situation described in the above two articles is based on what Economists call Economic Rent.  Here is an explanation of Economic Rent as it applies to footballers.

https://www.economicshelp.org/microessays/economic-rent/

A BBC examination of the pay gap.

https://www.bbc.co.uk/news/world-48530498

An argument for more pay but not the same.

https://www.theguardian.com/football/2019/jun/05/toni-duggan-equality-footballl-england-barcelona-womens-world-cup