But don't you see? This is just nature's way of making sure that bad genes get deleted from the gene pool. For a social species like homo sapiens sapiens not to go extinct only quick thinking, charismatic, successful people will get to pass their genes on through the generations.
The kind of men you refer to are unable to adapt to a changing environment. These men are undesirable for a reason: they lack wits, social and material acumen, an ability to make a potential partner feel comfortable (whether by boorish behaviour, poor personal hygiene or just not having anything to bring to the conversational table) and any number of traits that a partner might find attractive.
They is an unlimited number of ways a person can make themselves desirable: but the common through line of incels and similar losers is that it is not they who have the problem but people who don't find reeking, boorish misanthropes attractive.
To once again quote the lat 20th century poet philosopher Martin Gore: "don't just stand there and shout it; do something about it".
By that I mean improve yourself, not go crazy eight bonkers with and drill and guns in your old high school.