Superdeterminism, and the fact that it seems to rule out free will, is something I struggled with when developing the idea of a truly infinite cosmos. The reasoning went something like this:

In infinity (which includes the concept of eternity) there can be no change, because there is no passage of (or through) time.

The statement that in eternity everything that can happen will happen, an infinite number of times is misleading. It would seem better to say that in eternity everything that can happen is happening, now. However, even that is not quite right, because “happening” implies progression. The best I could find was: everything that can happen IS.

If the Universe we perceive is a restricted view of this cosmos, free will would seem to be ruled out, because we are living in a changeless infinity in which everything just IS.

One question remains. Why is everything as it is? It has to be possible that it is as it is, to some extent, because of the things we perceive ourselves as doing in our illusion of time.

At present, that seems more like philosophy than science, but if QM is providing us with a window into the infinite, it might bring about a unification of the two.

There never was nothing.