Whoever says that losing your virginity by the age of 20-something is not important, misses the point. Losing it doesn't make you a Chad, but not losing it makes you an incel.
Having sex is
normal, "normies"
can't believe I'm using this word unironically have it all the time, so if you're not having it, you're
abnormal, and that feeling of abnormality causes people a lot of distress.
As for the solutions... hell if I know. In another thread I suggested legalizing prostitution and giving incels vouchers for prostitutes, but someone objected that it could destroy their self-esteem even further, also there's a huge subset of incels who not only want sex, but wish to be loved unconditionally, and I'm not sure if they can be helped at all.
Although the idea of anti-horny pills as suggested by
@ReturnedHermit seems interesting. Sure, they would probably have a few unpleasant side-effects, but so does birth-control, but women take it anyway, soooo...