They kicked the shite out of all who went before. Hebrew settlements, now lost, did exist. Hush, they are too politically incorrect to mention. The Turkish Government takes the position of how it's their land so they control the history of the land. They will give permits to do research, so feel free to inquire about researching lost Jewish settlements in what is now called the sacred soil of a Moslem country.
Definite evidence exists of European movement the other way.
The above mentioned Celts conquered Central Turkey, the land called Galatia and their highly successful farming settlements gradually spread down into Lebanon. Their lost tribes became famed as the Druces. When the Turks captured Lawrence of Arabia, he explained his fair hair and blue eyes by saying he was a Druce, and it even shows this in the movie. First comes the question of belief. Some still say the early works of Hebrew writers was of God and never in error.