That's a crazy take on history!
1. Around half of Israelis are not from Europe, but from Arab countries (Sephardic). Iraq, Libya, Morocco, Syria etc.
2. Jews have always lived on this land, for as long as history is recorded. Safed, Tiberias and Jerusalem have had continuous Jewish presence for thousands of years.
3. The land belonged to the British mandate and before to the Ottomans, never a self-governing Palestinian group (which are just Arabs).
4. Palestinians are not fighting for their lives and land; that has been offered many times before, starting in the 1930s with various plans, then with the British partition plan, then many other times culminating in Oslo accords and later in the Gaza disengagement. They could have had one state, two states, autonomy, whatever they wanted. They refused all of those, because their STATED goal is to completely and thoroughly remove Jews from that land, which is considered holy to Islam (Al Aqsa mosque is built on the ruins of the Jewish temple mount).
Now when Islam came into being, around the sixth century, Jews were a few thousand years old already. So think about this when you try to attribute the land to this group or that.
Throughly fascinating history for those who want to learn it - https://www.youtube.com/watch?v=QwN0K2ZSAoQ