As a parent of teenagers, I struggle with how the hell to convey this to my kids. They are so engrossed in YouTube, stupid memes, and games that they don't join any clubs or sports at school; they don't seek out IRL activities; and my 17 year old has no interest in getting his driver's license. I have tried limiting screen time (and I took a lot of good lessons from Jonathan Haidt's The Anxious Generation[0]). They've both got ample opportunities for therapy (depression runs in the family, the eldest has various diagnoses, etc.) and for engagement with peers.
They simply don't make and develop friendships. I have no doubt whatsoever that this will be a huge regret of theirs because they've already said that they wished they had more friends. It's infuriating and deeply saddening to see my kids want to be connected, to have everything they need to be connected, but to still not connect.