True, but if you think quantum mechanics is the same as "flipping a coin" I think you need to do more reading. I have yet to hear anyone explain the delayed choice quantum eraser experiment in a way that's remotely compatible with a classical understanding of reality, much less analogize it to a coin flip.

No, but particles states can only be in a limited set of positions / values.

While these values take a larger range, they are still limited. I believe the coin example jjaredsimpson gave was, while hyperbole, to show that the states are limited, and thus can't be used in and of itself as an explanation of free will.