I remember watching old American educational videos for teens from something like the 50s (on YT). They talk A LOT about how to be likable and how much work one has to put into being accepted and included. The tone is very much "if you want friends and not be excluded (and being excluded is your own moral failing) you need to work on it".

I feel people have forgotten that. Having friends isn't easy. You do actually need to put in the effort - everyone needs to put in the effort, not just "the extrovert" that "adopts" you. And not just effort, it takes *SKILLS* that you need to actively develop and maintain.

So now we have generations where no one really thought us the skills or instilled the value of "it's a YOU problem". Everyone is just waiting for someone else to do the hard work. Even more stupidly, people might be lonely, but they are also very picky and if the person isn't exactly what they are feeling at the moment they flake/don't engage. And then they are surprised they don't have a surplus of friends when they need them.

So how do we resolve this? By telling people it's their our damn problem and fault. And no, I'm not saying ignore it on a societal level, I'm saying that the public policy to fix this is to start educating people that social engagement requires effort and skills. Maybe take those old American movies as inspiration (naturally remove all the sexist and racist bullshit).