Honestly, adults were poorly socialized by school.

Most modern adults find it difficult to socialize as adults, because all the socialization they ever had was in school. As such, they don't actually know how to go looking for social environments outside of a bar.

They have no idea how to build social clubs, or how to join any. This is the consequence of socializing entire generations through public schooling. The kids need to learn how to socialize like adults, rather than as public school inmates. The problem is that the parents don't know either.