The other thing that isn’t being recognized is that ‘out of africa’ theory goes way back to proto-humans. As far as I know, there is no fossil record of these proto-humans anywhere in the world, but Africa. I could be mistaken, but I don’t think there’s any record of Australopithecus in Russia.
There may have been multiple migrations, but the root of all humanity is the African continent.
Bucky Fuller says “Not so fast!! Take a look at Southeast Asia...”