Isn’t that what Tinder is indirectly trying to achieve with its “Get Super Gold+++ insta premium” business model? To get a somewhat even gender ratio you need to get a bunch of men to drop out, and asking for absurd amounts of money is certainly one way to go about it. Though I hear even premium tinder users vastly outnumber the women.
A raffle could work in theory, but upwards of 80 % of men will have to be thrown out and as a woman I wouldn’t see why I would settle for that instead of an app where attractive men will be falling over themselves to talk to me.
AFAIK the only proven methods for not-super-attractive men to get matches is to either go offline, or be bi/gay. Do with that advice what you will.