Here are some things that are widely believed about free will and determinism.
(1) Free will is prima facie incompatible with determinism.
(2) The incompatibility is logical or at least conceptual or a priori.
(3) A compatibilist needs to explain how free will can co-exist with determinism, paradigmatically by offering an analysis of ‘free’ action that is demonstrably compatible with determinism. (Here is the late Roderick Chisholm, in defence of irreducible or libertarian agent-causation: ‘Now if you can analyse such statements as “Jones killed his uncle” into eventcausation statements, then you may have earned the right to make jokes about the agent as cause. But if you haven't done this, and if all the same you do believe such things as that I raised my arm and that Jolns [sic] killed his uncle, and if moreover you still think it's a joke to talk about the agent as cause, then, I'm afraid, the joke is entirely on you.’)
(4) Free will is not impugned by quantum indeterminism, at least not in the same decisive way that it is impugned by determinism. To reconcile free will with quantum indeterminism takes work, but the work comes under the heading of metaphysical business-as-usual; to reconcile free will with determinism requires a conceptual breakthrough.
And listen to Laura Waddell Ekstrom on the burden of proof.