The “laws of physics” are mathematical models (abstractions) created by humans. And those abstractions are embedded in the physical world (our brains, written text, magnetic disks etc.)
Right, that's also roughly what I default to (because Platonism seems to have more unnecessary complexity/hypotheses). The actual nature/ontology of abstractions isn't entirely (or at all) solved by that (e.g. https://plato.stanford.edu/entries/abstract-objects/).