One important lesson from social psychology is that men receive their confidence from internal validation and women from external validation. This is why you can spot a guy who is faking his confidence- because he doesn’t believe it himself and it shows in his posture, tone, mannerisms etc. This is why guys looking for external validation seem feminine and needy. Women base their self confidence on how much their tribe celebrates them (external valid.).So women get a front loaded burst of confidence when they hit puberty, and then it slowly fades over time. They desperately try to cling to it by maintaining their youth, and becoming increasingly aggressive with their attention seeking. Male confidence rises and falls based on how well he perceives himself to be doing and how much he is progressing in life. So a man who makes daily progress, will find himself beaming with confidence as the years go by. This is a huge advantage men have over women. Sometimes we get jealous because women get so much love and attention just for their physical appearance, but this is ultimately their undoing.

In patriarchal societies where family units are strong, women are covered and non promiscuous so they don’t get this social approval nearly as much from broader society. Their tribe is their family more so than society as a whole and they care about approval from that family, not random strangers. A family will judge them based on more wholesome attributes than society will. This is why women who grew up in stable families with strong moral codes (like Jewish people) are able to remain monogamous despite a disgusting society- because they fear isolation and disapproval from their Jewish community. That is their tribe. But as our Christian communities disintegrated, women don’t care about the approval from that community. They care about it from society as a whole. But society doesn’t care about the interests of women, just whats in their pants. So they are being trained to seek approval by being slutty, whereas if they were Jewish for example, they would be judged by how hard they study and how well they marry. So women get miserable because they are getting validation from something superficial which can never last. Whereas if they were judged by their work ethic and how well they marry, they can be proud of that for life.

TL:DR- women get self confidence from how much they are celebrated by their tribe. In patriarchies where their tribe is their family and religious community with strong moral codes, they get approval for how useful they are and how well they marry- which is confidence than can be maintained across their life. When the family units break down and they get their confidence from a broken, moral-less society, they are judged solely on their appearance, so they become desperate to maintain and seek that validation throughout their life.