You’re still wrong. “Democracy” is not some floating, neutral mechanism that anyone can simply take over. It exists inside a state, and every state has a class character. Under capitalism, democracy operates through bourgeois property relations, bourgeois courts, bourgeois media, and bourgeois control of production.
I'm not the ones saying that...you are, with everything you just said in that comment. You are portraying "the state" as some separate entity that operates independently from the people within it. But, that isn't true. Those people make up "the state". It doesn't exist without them. So, yes...if you put different people in those positions, you absolutely can "change the state".