The UN still hasn't condemned the October 7th attack nor Hammas's use of civilians as human shields. Not sure about the rest. So I wouldn't call them an unbiased authority.

Politicians in Israel have called for ethnic cleansing, fringe crazy politicians. Marjorie Taylor green blamed California wildfires on Jewish space lasers. I hope you don't let that paint your views on the US legislative bodies.

As for different laws about ethnicities (probably the source for calls of apartheid): it's very limited, the main thing is that diaspora Jews can get citizenship automatically. This law is to help Jews anywhere escape from antisemitism. If you're an Israeli citizen however (muslim, jewish, christian or whatever), you have equal rights under the law.

It's easy to parrot things like apartheid, but it's more like 0.001% apartheid in the most technical sense, and not what people mean it when they say this word.

As for the comparison to western democracies: I think Israel is doing very well, even compared to some of the world's oldest democracies (France/Swiss multiple Muslim related bans, US during the trump administration, etc.), but the people drawing this comparison usually advocate for replacing it with Hammas which is a proper terrorist organization that advocates for killing all non Muslims, killing lgbt, etc. It's a classic Utopia fallacy gone to the extreme.