Free will can exist because consciousness is an abstraction created by the brain similar to a virtual reality on a computer, where the laws of physics is what the brain builds upon, consciousness is a function of the brain, ans SELF consciousness is a layer above that, constructed by the functionality of the brain, that far exceed normal physical causality.
There’s a reason we have a feeling of free will, if free will didn’t exist, a sense of it would serve no purpose. So Occam’s razor indicates that we shouldn’t have that sense without also having free will.
We can imagine a future far removed from our current state, fantasy and SciFi books are clear examples of that. How would that be possible without free will?
Freedom from that control.