You’ve fallen for the outrageous propaganda hook, line and sinker.
When the League of Nations/ United Nations gave that land to Israel there was a slogan that went with it - a land without people, for a people without a land.
That’s backed up by the famous skeptic Mark Twain, who wrote about his visit to that land before Israelis moved there, and described it as a sparsely populated desert land.
Only after Israel moved there and terraformed the desert and invented things like drip irrigation, and made the area habitable, did the Arabs start moving in and tried to claim it as theirs.
The Israelis had no problem letting Arabs move there, but in 1948 as soon as Israel officially became a nation, six surrounding Arab nations attacked them to destroy them, and they ordered the Arabs to leave the area until Israel was wiped out, thus becoming so-called refugees, which the Arabs are still using after decades, for political reasons, as part of the false accusations and propaganda against Israel.