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.
Harris just offered little to get voters excited. Mostly ran as a status-quo candidate. Racial minorities, for the most part, are not happy with the status-quo. By being ignored, it allowed right-wing propaganda on media (social and traditional) to do its work. One thing I've heard is, "well, at least Trump sent me some checks." Many people I've talked to weren't happy with Biden's involvement with the crime bill, or Harris' being a DA that proudly prosecuted cannabis offenders. Some people I've talked to liked that Trump pardoned Lil Wayne, Kodak Black, and that woman who had an extremely long sentence for cannabis. One person I've talked to was upset about "libtards" removing black faces from grocery store products (using Aunt Jemima as an example). Some younger men I know (some racial minorities) have started going deep into the Jordan Peterson, Fresh and Fit, Andrew Tate, etc pipeline, which I'm guessing is rooted in sexual insecurity.