You are misinderstanding the complex science and history involved in uncovering the origins of humans.
The earliest humans were ape-like bipedal creatures. They evolved away from similar non-bipedal ape-like creatures; ones which would serve as the ancestors for modern day primates such as apes. These earliest humans, such as homo erectus ("erectus" coming from Latin and referring to standing upright), came from Africa. There is no question about it, judging by skeletal evidence excavated. These earliest humans lived hundreds of thousands to millions of years ago.
There were many other species of early human that lived before modern day homo sapiens evolved into existence. In fact, just like there are many different species of canine and of monkey, there were also many different species of human throughout the world, such as Neanderthals, but also less known ones such as dwarf sized humans who lived in prehistoric times on islands in or around the Pacific Ocean.
Early human skeletons found in places such as Israel, Georgia, Europe etc. simply are those of humans that came long after the very first hominids evolved in Africa, but long enough before us homo sapiens to be considered "early humans" too.
How did they get there? Easy: hundreds of thousands of years of slow evolution and migration. Now we have the humans of today, but we will almost certainly evolve into something else in the far future.