This strikes me as being depressed because someone else won the lottery.

Maybe you can win the lottery too, but the odds are very low. Very low.

You can get in contact with large numbers of young women by using a dating site and saying that you are seeking a relationship with a 20-something woman.

That is akin to buying hundreds of lottery tickets. Your odds improve some.

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Another option would be to speak with someone about why you are insisting on this one specific, highly unlikely type of romantic relationship--and how you can get past the self-imposed isolation that this insistence entails.