One of the issues with online discussions of the Out-Of-Africa Theory is the fact that it only deals with Homo Sapiens coming out of Africa in the last 100,000 or so years ago. I've seen many posts on YouTube where somebody says found remains were found of a 7 Million year old fossil in Europe that conceivably might have belonged to a line that, millions of years later, would develop into the human line and claim that "this blows the Out-Of-Africa Theory away!!"
Most of these posts are by white supremacists, and most of them are either Russian or extreme right types who get their info from Russia's online troll factory.
Be that as it may, the Out-Of-Africa Theory doesn't deal with Homo Erectus, Homo Habilis, the Dmanisi peoples in European Georgia, or any of that. It deals with modern hunter-gathers with modern intelligence leaving Africa to settle in new places when the climate made it possible for them to do so. And the time frame is usually given around 70,000 years ago. We have found remains of what many call modern humans in Israel around 100,000 years ago, but Israel is just outside Africa and so far as we know, the settlements didn't get much farther away than that, (there is a finding in India that is up in the air, I believe).
As far as I'm concerned, even if we find remains far outside Africa of populations of modern appearing groups even 120,000 years or so ago, even that would not disprove the Out-Of-Africa Theory, only modify it.
The modern thinking is that there were two main groups that left, one older wave around 70,000 years ago and another newer wave around 45,000 years ago. The older wave never developed large population numbers, so when the second larger wave came 50,000 years ago they basically obliterated all traces of the older wave except for the South Sea Islands and Australia.
If we ever do confirm some findings of modern looking people in India or elsewhere that are 120,000 years old, all it would mean is that an even earlier wave of Homo Sapiens left around 120,000 years ago and lasted until the later two waves came and drove them out. Who knows, perhaps those people who left Africa 120,000 years ago are the people who are the mystery contributors to the native Australians' genome that they are talking about-maybe their last holdout was Australia too, just like Australia was the last holdout for the people who left 70,000 years ago.