let me ask you this: what would make someone trans if they didn’t feel the desire to be outside of their birth sex? saying you are something does not make you that thing.
non-binary isn’t a gender itself. if you were to feel you needed a penis, you would be a trans man. if you felt the need to be sexless, you would be agender. if you felt the need to have a penis and a vagina at the same time, you would be bigender.