Hi . I understand this isn't easy to intuit. But thankfully law and its enforcement doesn't require a state. State, in this context means (something like) a territorial monopoly on the right to initiate violence and ultimate decision making authority. The best works I've seen talking about the provision of (polycentric) law under stateless conditions are David Friedman's The Machinery of Freedom - I made an illustrated summary video here:
And Micheal Huemer's The Problem of Political Authority is great too.
RE: An Original Parable about Voluntaryism