Outside of having some kind of mental illness, physical deformities or handicap there is no reason for a able bodied white man to be an incel.

Most white men live in white majority countries where white women

https://www.pewresearch.org/social-trends/2017/05/18/1-trends-and-patterns-in-intermarriage/ date and marry white men at over 90%.

In those white majority countries the ethnic women actually prefer white men over men of their same race.

https://www.youtube.com/watch?v=zAJcq3qMfds

https://www.ucpress.edu/book/9780520293458/the-dating-divide

The only way you can be a white incel is if you are so racist that you can't find one non white woman attractive enough to have sex with or you are fat ass because of your laziness and even if you were a fat ass you could still probably get a ethnic girl to hookup with you( I've seen it before.)