Before and after the defeat of the Ottoman empire Jews from Europe began moving to Israel. Not in such large numbers but it certainly picked up by the time WW2 came around.
There were lots of idea the Nazis had about what to do. One was even to send the Jewish people to Madagascar.
Was Israel ever considered and if so why wasn't it used. If not then why wasn't it?
More of course can be said, but as this answer touches on they did for a time consider the possibility https://www.reddit.com/r/AskHistorians/comments/420wni/why_didnt_the_nazis_just_deport_the_jews_back_to/cz6semh