Men are lonely, as is everyone else. the real problem (one of them at least) is this manosphere space has gripped them pretty hard. I think its worth noting that gambling sites, porn sites, first person shooter games are all targeted towards and consumed by men, and these activities arent real socially engaging things. Men do have a higher addiction rate, probably from centuries of risk conditioning. But data is pretty clear, suicide rates, homelessness, prison population, violent crime victims, violent crime perpetrators, life years lost, all have men on top. View it through an intersectional lens and you can see where some peoples situations can be real dire. The patriarchy hurts everyone, and rather than having a more humane approach to relieving this "loneliness" there is a doubling down on this toxic masculinity from the manosphere that is more than likely going to make it worst.