ok first
you still can’t objectively determine that the chances of those things are low, you literally can’t know that “the chances of the universe coming into existence are unknown” because that requires you to have information obtained from outside the universe and you have obviously never been outside this universe before
second
the 97% figure doesn’t apply because humans aren’t animals and are sentient and it would be much harder to go extinct
third
that was because neanderthals assimilated with us with our DNA and also due to us being better explorers than them