Men and women hard wired to have sex even we don't want to admit it sometimes. Men and women typically want certain type of person to have sex.
Women want to have sex with physically strong (tall, good looking, muscular) and masculine type of males. Of course these males are not that many.
Roughly 30% of men in this category. (you don't have to have all to be in here but you have to have enough of these.) And typically men want to have sex with feminine, curvy, enough good looking females.
We can say minimum 60% of women can be in this category. So roughly 60% of above average standart women compete for top 30% of men. That explains why women compete each other all the time because there are far less men out there to compete for. So women always try to get attention from these men to out compete other women. This explains why women obsessed with attention and being desired. These 60% of women only focused on these guys and try to keep others away from them and this explains so many things also.
What about the others?
Roughly 30% of men are not enough for physically. Either they are too short or too thin or overweight or too ugly. These people are having difficult time to attract women.
Also there are bottom 20% of women and they are having difficult time to attract males also.
And there are mid or below mid section. These are average-below average folks. They have average or below average face, average body and most importantly they have low amount of masculinity which women hate about them the most.
Below average-average women who roughly 20% compete for the best of these average males. They can go for top 30% but they know they don't have that much chance.
So this is how the law works. You can deny it but you can't change it.
Ps: Of course life is more complex than this sometimes it can get mixed but majority won't change. (We excluded things like status etc.)