Probably not as niggers will fuck anything.
I have seen videos of horny niggers literally fucking a hole in a tree and the very ground we walk on itself.
US niggers have been caught by law enforcement for raping puppies, horses and yes even pigs (actual pigs not the police, heh).
So I fail to see how the wild niggers of Africa could ever be incel.
I believe incel niggers perhaps only exist in small quantities in the white western world since our niggers have been civilized to an extent unlike the wild niggers of the African bush and even the niggers from the more developed parts of bongo land.