Looks like your numbers are off by quite a bit...
WNBA AVERAGE
Attendance 6,721
Ticket price $47.00
https://projectsports.nl/en/what-is-the-average-attendance-at-a-wnba-game/
$315,887
12 players
26,323 per player per game.
36 games per season
$936,000 per season per player in ticket sales.
NWSL average
Attendance: 7,337
https://en.m.wikipedia.org/wiki/National_Women's_Soccer_League_attendance
Price
Price: $20 (closest I could find, nothing official)
$146,740 sales per game
25 player roster
$5,869.60 per player
22 games
$117,392 per player per team.
So, judging by your logic, the average WNBA player should be making about 8x more than $54k per year (the actual average wage of NWSL players). Or roughly $432k per year per player.
I'd be alright with that. It's lower than I'd like, but that would be alright. But NWSL players should make that much as well, IMO.
They are the top women in the world. They deserve a salary large enough to retire on.