The problem with Stoicism that nothing can make you happy or unhappy without your consent. All unhappiness is the result of bad thinking, poor character, and confusing what we can control with what we cannot control. There is nothing new or surprising in anything that happens to you. In fact, nothing “happens to you” You are the problem.
If everything is predetermined to happen and occur, then how can you be free. Is your freedom real or is it an illusion?