Are you trying to tell that Iran has nothing to do with Islam? Is hijab has nothing to do with Islam?

Lashing people for saying things you don’t like has nothing to do with Islam.

Or is Iran following wrong/different kind of Islam?

Iran is Shia so since I’m Sunni my answer would be yes, but that’s not what you’re asking. An asshole that uses Islam as an excuse doesn’t indict Islam as a whole. Or it does, in which case we could use China and the USSR to say a lot about atheism.