How can I get over the fact that all men prefer blondes?

I’m 18 and as a little girl all my family members told me that the male brain is subconsciously attracted to lighter color which is why every men turn heads immediately when they see a blonde, that no matter how stunning a brunette/redhead is she can never compete against a blonde with blue eyes even if she’s average, that men that married brunettes actually just settled, and that men that says they prefer brunettes are lying out of the fear of sound racists or Nazi, or they just don’t know that they’re biologically programmed to prefer blondes.

I know it sound dumb, but it makes me feel bad as a brown haired woman to feel that I have to bleach my hair to be a man’s first choice, while I’m attracted to guys with black hair and blonde hair, blue eyes and brown hair, and tall or short, but the man that I will marry will always secretly crave a blonde.

The fact that I personally know 3 men that dumped their brunette wives for a blonde just confirm what I think...
How can I get over the fact that all men prefer blondes?
How can I get over the fact that all men prefer blondes?
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