Think back to when you were early in your career, and you went into a first performance review expecting a raise or promotion, despite having never discussed it with your manager. When you didn't get it you may have tried to negotiate in that meeting. But it didn't change anything. As a seasoned manager you now know that it's because raises and promotions aren't decided in the performance review meeting; the decision is a slow build-up over many months, often with multiple people's opinions taken into account.