Everything is deterministic, but only in retrospect. The future is a quantum cloud of probabilities filled with choices until, in the present moment, your choice comes to fruition for better or worse. The cloud of possible outcomes thus collapses into a fixed certainty, then memory makes the event - now in the past - appear to have been inevitable. The past cannot be altered, so it appears deterministic.
Looking backward at the immutable facts of what happened paints the illusion that you had no free will, but looking forward you know you have free will because you sometimes grapple with difficult decisions. Life is NOT a cruel hoax of predetermination. You are NOT a robot.