"conventionally attractive" means not bad looking but boring nobody says no to a conventionally attractive woman but also nobody falls in love with her either to fall in love with somebody you need to somehow be able to tell them apart from the others and for that they must have some kind of kink to them women like Zendaya are not conventionally attractive but actually easier to fall in love with because they are easier to remember than somebody who looks like Margot Robbie because she just looks like every other model