Yeah, so how does communism solve the situation when attention of women is limited and needs to be competed for? Does every man get an equal 3-second slice of attention from each girl on communist dating apps?
No. It's just that the teachings of totalitarian sects are especially effective against narrow-minded, disillusioned people. The solutions they propose are not supposed to be effective or even realistic.
Attractive women are not such a rare resource. There is no particular problem in collecting it and distributing it fairly. One attractive woman can satisfy tens of thousands of men during the period of her attractiveness.