> "God does not play dice with the universe."
So you're in good company. However, it's more complicated than it appears and most physicists do not agree.
The randomness in QM is different and deeper than that which appears classically. For example, a coin flip isn't really random: if we can measure the coin's weight and the imparted momentum precisely enough we can predict the result. In QM this is fundamentally impossible, a measurement of a superposition state produces a random outcome. It's not merely and expression of our lack of knowledge of the underlying facts. Experimental violations of Bell's inequality demonstrate that there are no underlying facts in QM (called 'hidden variables'). https://en.wikipedia.org/wiki/Bell%27s_theorem
Unless you accept one of:
A) There is no free will: we are all enacting a clockwork fate. https://en.wikipedia.org/wiki/Superdeterminism
B) Non-locality (faster than light interactions between distant systems)
It sound like you may already accept A, in which case fair enough!