Actually not true. The first upright walkers existed ~3 million years ago. Neanderthal relatives lasted until about 15000 years ago. Africans were the first. Pangea and all. How do you define human?
Who's defining human? I'm only defining last known whereabouts, which would be Russia ie Siberia, for the Native Americans before they came here.
The Paiute from Nevada have a legend that there were these giants who were 8 to 10 feet tall with red hair who they called the Tule Eaters and accused of being cannibals, who they exterminated. What does that sound like? So that's why I say "natives" is a stupid and pretty much racist term.
There's also DNA evidence the dogs native Americans originally bred had European dog ancestry, so the native Americans would apparently had to go through Europe first.
Also the first humans from Africa is debatable. There's evidence the first "humans" came from northern Asia and became the Africans,Neanderthals, and Denisovians.
Therefore all this who came first stuff is nonsense, and everyone should stop it.