I am separate to things that belong to.
You are trying to use a form of words to establish that you are not your body. In other words, this is another use of your usual tactic of trying to define yourself out of a problem.
Certainly, you feel that your consciousness is a separate thing from your body. Conceptually, it
is separate. But that doesn't mean that it is caused by anything other than processes that are intrinsic to your body (including the brain, of course).
It doesn't matter that your conception is that a separate you "owns" a body that it can make use of. What matters is not your subjective belief, but the objectively verifiable facts of the matter, which are that "you" go away if and when "your" body goes away. There's really no "you" to separate from your body. There's only the "you" that your brain gives you the illusion of. Giving you that perception is only part of what your brain does for you.
It is more accurate to say that "you" belong to your body, rather than the other way around.
An interesting factoid that you might like to consider: not every language uses terms like "my body", "my arm", "my brain". That's a kind of accidental feature of English. For instance, in French, you would simply refer to "the body" or "the arm", never "my body" or "my arm".
Do the elements know, or can they discuss, what their functionality is?
You know that science has moved on from earth, air, fire and water, I assume. Which elements are you referring to?
Your body (including the brain) is a pattern made from billions of small "elemental" building blocks. That pattern combines in such a way that the resulting human being is about to contemplate its own "functionality".
It does not, of course, follow that a property of the whole is necessarily the property of any of its parts, considered in isolation. Possibly you're falling into the Fallacy of Composition.
So what is a human beings functionality?
Didn't I answer that question before?
By the way, my laughter isn’t nervous laughter.
Sure. I believe you.