Yes, true randomness is possible through quantum phenomenon. No, it isn’t possible to generate true randomness using deterministic processes (eg, almost all computational ones).
Determinists would ask, is the quantum phenomenon just ignorance by current lack of understanding to what humans can possibly know with the tools we have now?
True randomness is like believing in god if your life is good or praying to a god if your life is bad.
According to the Copenhagen interpretation of quantum mechanics, there are no local hidden variables and the world is truly random. Even knowing the complete state of a particle will not tell you how its wave function will collapse.
