Supervenience is the relation of being made of a substrate, but not predicted by its laws. Supervenience is distinct from entailment, you are conflating the two. https://en.wikipedia.org/wiki/Supervenience

Suggesting that the natural laws are such that all behavior must be entailed by "lower level" natural laws, is a stronger position than stating that all things follow natural law. I think it is hubristic to think that somehow our understanding of natural law is exempt from the same issues that are raised by the incompleteness theorem in math.