This is not my personal opinion, I know Gen Z men who voted for Harris. But the voter demographics really speak for themselves, and maybe now people will look at the radicalization of young men as a serious (but solvable) issue.
I'm not doubting you OP, just asking if anyone has the voter demographics data that shows Gen Z males voted for Trump because I'm interested in the #'s of the issue.
As to the question of the post: I think part of the issue is that what it means to be a strong, mentally healthy male has been left unspecified or even attacked in recent years and that's left a lot of young men confused and upset. Men get all sorts of advice on what's wrong to do, but not enough on what's right. Contradictory advice makes the confusion worse.
Are you supposed to chase a girl or is that creepy? How do you navigate increased romantic isolation and dating apps in a healthy way? What are expectations about being the sole income provider a la tradition? In that vacuum confident, opinionated, clear voices are persuasive, and a lot of those voices are the jackasses pushing a toxic masculinity and telling males to reclaim it. We need more strong, positive male role models and visible social support of them if we want to win young men back - they have to know that being better will yield rewards.