Except that’s literally not at all what happened. There was never any sovereign nation called Palestine prior to the end of the British Mandate of Palestine. Before that it was ruled by the Ottomans. And the name Palestine was originally given to the region by the Romans when they ruled the region to spite the Jews by naming their promised land and ancestral homeland after their historical enemies, the Phillistines and the name just stuck.

During all of those periods both Arabs and Jews lived in that region. When the British Mandate of Palestine ended there was a war between the Jews and the Arabs and the Jews won as they did time and time again despite the Arabs being the aggressors the vast majority of the time. This idea that a nation called Palestine existed prior to the end of the British Mandate or that there’s an ethnicity of people called Palestinians that aren’t just garden variety Arabs is completely false and used as propaganda. The land these people claim as theirs never belonged to them nor did they ever rule it before and they lost all the wars they started to attempt to claim it.

The Arabs don’t get to fuck around and find out and then play the victims.