There NEVER was a palestinian state before....even a foundation of one would be a new thing for them!
There never was a Jewish nation state either. In fact, the modern nation state only appeared after the Peace of Westphalia.
The Kingdom of Judaea collapsed in 70 BC, destroyed by the future emperor Titus. It was not a modern nation state, but rather a theocratic monarchy. It was defined by dynastic rule, religious rites, and tributary systems. Not by civic nationalism, borders, or mass participation in some collective identity.
All of its institutions, political coherence, and EVEN POPULATION was dismantled. No modern state would accept such a 2,000 year gap as constituting "continuity" for legal or diplomatic purposes.
The population part is especially important when discussing the Palestinians, and why I want to bring up biology. Logically - I'm sure you will agree BB - every living person is concrete proof of an unbroken chain of survival and reproduction stretching back to the emergence of Homo sapien, let's say roughly 300,000 years ago. If even one of your grandpas failed, you would simply not exist today. So... with this resolved, let us first establish that Jews and Palestinians are equally old biologically. That is, the Palestinians did not arrive from Mars in 1948.
Now let's return to the collapse of the Jewish population in Judaea. It literally collapsed, to a tiny fraction of what it had been before. Who continued living there instead? That's right, Palestinians. They are the product of millennia of adaptation, reproduction, and continuity... whether under Canaanite, Philistine, Israelite, Roman, Byzantine, Islamic, Ottoman, or British rule.
Since their little piece of real estate happened to be the most desirable real estate in the world, they did not have the good fortune of carving out their own little place, and instead spent their entire time living under massive empires.
Do you think the Jews would have better success than the "Palestinians" at ejecting the Roman or Ottoman Empires? Something tells me, no.
So this argument of no "Palestinian state" is completely ahistorical gibberish deployed by Israeli propaganda. The simple fact is there was no Israeli state either (in fact ancient Israel was destroyed by Assyria, on Judaea's request), and that Jews had not lived there for a much longer time than the amount of time the Soviet Union has not existed. Nonetheless, your Ukrainian allies view these 35 years as being as wide as the galaxy. I wonder what Ukrainians would say if we made claims that were 2,000 years old - hahahaha!