Just because you communicate your ideas in the form of questions or by negating meaning, that doesn’t mean you’re not trying to communicate ideas. I’m not against questioning or negation at all, I do a fair bit of it myself. But when you question/negate specific concepts but not others, people understand that as a statement, and interpret its meaning as best they can.
If you genuinely don’t believe you’re trying to say anything, and are purely “questioning everything”, that could explain the misunderstandings. Because you definitely are saying things, but because you’re unaware of it, you’re not being careful to explain them carefully or cooperate with your interlocutor, and so are prone to misinterpretation.