I am Jewish. My mom is Israeli. I have friends and family living in Israel right now. I lived in Israel for a year a few decades ago. I was there when Rabin was assassinated and things went from "peace in the middle east at last!" to "Bibi committing war crimes for a few decades." I am so critical of the Israeli government's actions toward Palestinians that I have had to mute all my family group chats since October.
But I have to agree that anti-Zionism feels like antisemitism. You can be critical of the Israeli government without the belief that Israel shouldn't exist. You can want the Palestinians to have their own state without the belief that Israel shouldn't exist. I'm not sure what anti-Zionists think would happen to all the Jews living in Israel if it were just magically given to the Palestinians overnight, but here's a hint: Hamas, the people running Palestine, literally, factually want to kill them all.
No, I don't think what Israel has done to the Palestinians for decades is in any way acceptable or moral. But any solution at this point will have to involve safety for everyone not just one side or the other.
That's my $0.02. I expect to get a lot of flack for being so open about myself and my beliefs. I probably should have made a throwaway account but whatever. Hopefully this doesn't bite me in the ass.
EDIT - Just to also add that I don't think it's black and white that all anti-Zionist are antisemites. But it FEELS that way. And I think part of the issue is that antisemites are using anti-Zionism to spread antisemitism.