I'm not straw-manning any and all critics of Israel as going full Patrisse Cullors.
Just ask yourself the question.
If your answer is that Israel does have a right to exist and a right to exist in the region; then, ask yourself specifically which concessions that you would want to see Israel make that would make you think that she's specifically reformed. If you can't produce answers, it's time for introspection.
If your answer is that Israel does has a right to exist; just, not where she's currently located. Okay, tell us where, why, and how you plan on pulling this off. Tell us your ethical justification for a forced relocation of about six to seven million people, presumably just Jews and not the Arabs who live and work in Israel, to another place in the world. Show me one force relocation in the history of mankind that didn't result in something resembling a genocide.
If your answer is flat-out "no", there's a real problem here. If Israel is an apartheid state, surely Germany qualified. Germany still exists. We removed a genocidal, expansionist, racist regime. Granted lived under occupation for a lot of years; but, we didn't wipe him off the face of the planet. There were hundreds of thousands of Jews in Iraq, Algeria, Libya, so-on. Now, in most of those nations, you can count the entire Jewish population on one or two hands. Iraq committed several genocides against the Kurds. Did you ever call for Iraq to be obliterated as a country? How about Egypt with her persecution of Coptic Christians? Did South Africa deserve to reform; or, should she had been removed as a state.
There's a reason why so much anti-Israel rhetoric has everything from a tinge of anti-Jewish language all the way to blatant displays of hating Jews. Even if Israel is an apartheid state, which she isn't, you've gotta examine why you're so focused on her and not the crimes if her neighbors and enemies.