You have not fully understood what I mean by "free". What I am implying is that quantum indeterminacy may not be random, but caused by something beyond physical detection.
OK, so how do you propose to demonstrate that? It's a valid hypothesis, so far as it goes, but how would you test it?
If conscious human will is capable of interacting with physical events via apparently undetermined quantum events, then such events will still be deterministic, having been consciously invoked by an act of human will from our present state of human awareness.
See, you've not liberated the system from determinacy there, you've just introduced more deterministic effects - this 'conscious human will' which interacts with physical events comes from where? What causes those particular influences to be applied at those particular times?
Therefore it will be free from physically predefined chains of cause and effect over which we can have no conscious control.
That's when you fall down that logical rabbit hole, again. That 'conscious will' element - either it's another deterministic process, reliant on prior events and activities to determine its outcomes and you therefore aren't free at all, or it's independent of prior events in which case it's random, and you don't have will you just have chance.
O.