I'll just repeat, maybe it will sink in:
The freedom is determined or caused by something that is part of the electron, some property of the electron. One can say that the electron has certain dispositions, certain ends or final causes, there is order (either Sx=+½ or Sx=-½, not pure randmoness) in the freedom of an electron. The freedom is not random, it is merely indeterminate. So while randomness entails indeterminism, indeterminism does not necessarily entail randmoness. One can have indeterminism and order and one can have indeterminism and randomness but one cannot intelligibly argue to have pure randomness and order or orderly randomness.
The "free" in free will is therefore analogous to the freedom of the spin of an electron. More than one possibility, indeterminate and not acausal.
It gets you the "free" part. That is all. Just to be sure, the examples in quantum mechanics are used to explain what "free" means in the context of "free will". It is right to say that quantum indeterminacy doesn't get you free will.... just the free part.
Now we can move on to the "will" part which is linked to your intellect (which is directed towards ends i.e. deterministic. That might be a step too far for you since you cannot accept that humans have an intellect based on your materialist metaphysics

