Beauty standards?

So I'm curious.. you hear all the time from ladies talking about beauty standards that men have but I'm not sure how. Most of you "average" looking women could, might have rotations of men who are physically more attractive as men then they are was women that they could or might have slept with and most men would sleep with anything. Even your typical handsome guy has less sexual selection then your typical average woman. With that being said, why do women or society in general believe women are suppressed to high standards they have to adhere to when it comes to dating? Usually men have to be the best versions of themselves physically and in other departments to have more options as opposed to women.. so someone can give their input because I'm confused.

Beauty standards?
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