If so many men care mostly about women’s beauty when considering a relationship, then why are so many attractive women single?

I see mostly average to slightly above average women in relationships, especially with hot men. Meanwhile a lot of very attractive women have trouble getting men to commit to them and can’t find a partner. This is merely just based off what I see, and I’m curious.
If so many men care mostly about women’s beauty when considering a relationship, then why are so many attractive women single?
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