I think making counseling a mandatory part of school for everyone would go a long way to helping prevent this problem. Something to get the kids that are behind socially to be more comfortable socializing. When I was a kid all the incel types were coming out of highschool having had the shit bullied out of them for years and being afraid to socialize with anyone outside their group. Then they get out of school with social skills and at the mercy of wherever they end up(college, job, neet, whatever) if they don't find someone to include them in shit and rewire them out of that "other people are cruel" mindset they're fucked.