There are both deterministic and non-deterministic interpretations of quantum mechanics. The "Many Worlds" interpretation is deterministic, as all possible outcomes end up happening, albeit in different parallels worlds. Bohm's interpretation is also deterministic, and is experimentally indistinguishable from the Many Worlds interpretation, but only one of the worlds is real. Which one is real is deterministically determined from initial conditions that are impossible to inspect. And even if you could inspect them, the result is chaotic.

Other interpretations rely on probabilistic collapse of a "probability wave", but this amounts to nothing more than the cosmos rolling dice. It's hard to fathom how one is supposed to arrive at a mystical "free will" via the rolling of dice.