If you don’t understand emptiness, then emptiness is your understanding of emptiness.
Emptiness can be viewed as the lack of a separate self. Everything is interconnected, nothing exists independently, so no entity possesses a self which is separate from the whole. Everything is empty of a self.
Also, everything is change, so emptiness is lack of permanence.
Hopefully, this keeps you confused so that you can keep contemplating emptiness, self, interconnectedness and impermanence. Through focused contemplation of emptiness (mu) you can discover your True Nature, which, you will find, strongly resembles emptiness.