The problem is that your numbers doesn't reflect actual population.

1. If you look at a population pyramid, you would see that at the range 20-30 years old, there are more men than women. Usually, men prefer younger women, so a man who wants to date a 20 something woman, would be also competing with 30 something or even 40 something men. Those men many times would ignore older women. As a result, the ratio men/woman in dating becomes more skewed.

2. A percentage of both sexes is gay/lesbian or bisexual. So some women would prefer other women and won't be available. Gay man would compensate for that, since they won't want to date women. The difference comes with bisexual people. But since we don't have numbers, we would go for things even it out.

3. You forgot that women also follow a normal distribution and many men only want the woman who they deem "hot" and are on the 50% above average. Which reduces further the ratio.

The original term "incel" was invented by a woman. Somehow, women aren't allowed to feel rage when men aren't interested in them. Maybe the problem is that people need to learn to deal with frustration and not getting always their way. After all, when you don't get a job that let you have a good life, you can feel rage. But narrative doesn't allow you to act on that rage and attack the rich. Sure, some people do, but doesn't get the same sympathy and underastanding han incels. The real problem is that our society considers acceptable to blame women for men's problems. So they take their rage on them instead of dealing with it by other means like games, sports o whatever activity that lets you blow steam. They think women "owe" them and don't see women as people. If they did, they might still feel frustrated, but won't take it on them much in the same way that unemployed people is not burning wallstreet.