According to polls conducted in the last few years, 85% of Arab citizens of Israel support a Palestinian right of return, which would significantly diminish or even eliminate the country's Jewish demographic majority. Additionally, 75% of Arabs believe Jews have no right to national sovereignty in Israel, and 64% of Arabs (including 72% of Christians) believe a Jewish state is incompatible with democracy. Finally, asked which side they'd take in the event of a defensive war between Israel and Arab countries, only 26% of Arabs picked Israel.

On the Jewish side, 58% of Israeli Jews believe Arabs who reject Israel as a Jewish state should be stripped of their citizenship — that's 58% of Israeli Jews who support denaturalizing 75% of the Arab population. Two-thirds of Jews believe Arab citizens should not be permitted to buy land either outside of Arab areas (41%) or anywhere in Israel (~25%), while 66% oppose the appointment of Arab ministers and only a quarter are willing to include Arabs in decision-making relating to governance or the economy. These numbers drop further when relating to matters of peace and security, with just 16% of Jews in favor of letting Arab citizens have a say.

Sources:
https://www.pewresearch.org/religion...d-public-life/
https://www.jpost.com/israel-news/article-706596
https://jcpa.org/an-in-depth-analysi...s-of-may-2021/
https://www.timesofisrael.com/poll-6...-nation-state/

It doesn't look like there's any real Arab support for Zionism, they're just trying to survive and make the best out of a bad situation.

Ultimately, it's not for nothing that most Israeli Jews are fearful and distrustful of Arab citizens considering if they had their way Israel would cease to be a Jewish state and start to look a lot more like an Arab/Palestinian country.