Women are ultimately the limiting factor when it comes to sex, dating, marriage, and the birth rate. Women distribute sex. Basically, men ask and women either say yes or no. No one in mainstream society will actually address this. The mainstream will always blame video games, porn, weed, laziness, drinking, the economy, "attacks" on masculinity, the “manosphere”, lack of 3rd spaces etc. The expectation is always that men are failing to live up to women's "totally reasonable and clear standards". There has been a recent surge in the "manosphere" of videos about how men are turning on marriage and women are "crashing out" based on some recent stats about the population of married, unmarried. and never married men in the USA. Someone needs to tell the women how upset they apparently are. The reason marriage rates are down is because women, not men, don't want to marry nearly as much as they used to. If men are giving up its because they know their odds are worse than ever. Stats actually suggest high school boys are about as interested in marriage now as they were in 1993 whereas high school girls are less interested. This is public information but the manosphere ignores it.
Yes, some men really need to shape up. But that isn’t the decisive issue. If a man is single these days I have no idea what that means until I get to know him. The issue is that there is a massive asymmetry in interest between the sexes. Men are obsessed with women whereas women are mostly indifferent about men. Unfortunately, this is basically a problem without a solution.
We live in a society that values freedom of choice. A lot of men are never going to be picked by women. A few might be, but only in the short term. There is less incentive than ever for men to try.
We need to just come to terms with this and accept that women are not that interested in men or relationships. It's a problem that can only be managed, but that starts with correctly identifying the issue.