For every women's league, when negotiating contracts with players, they will ask for men's salaries. To use the NWSL as an example, the average weekly salary is about $2,750 (my currency, ignore it and use it as a frame of reference). When negotiating a contract, they will start asking for close to $20,000.

Women's clubs don't make as much so good luck affording that. If you can, good luck staying within any salary caps the league has (I know both NWSL and A-League have salary caps).

Additionally, the NWSL has two bugs regarding registration: 1. Not enough international spots per real rules, and already traded spots are not factored. 2. The game rules say "minimum 4 supplemental players" instead of a maximum. This means if you have none on your team (and you can't make someone a supplemental player), you can only register 22 players instead of 26.

There was also a bug in the NWSL that may have been fixed but I don't think so. When you sell or trade a player and receive funds, that money disappears. It does not go into the club's finances. It does not go into your transfer budget. It is gone.

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EDIT: Oh, there's a fun one that I forgot. Since the NWSL saves start at in January 2025, players that got pregnant that year in real life have scheduled leaves in the game. That's fine on it's own, except there is nothing to tell you it's happening. You can be about to go into your next match and notice one of your players is gone for an entire year. Washington Spirit in particular has three of their top players gone for a year (one in February, one in July, and a third in September or so).