Here is an article that I think details why it’s a mistake to think of the trolley problem as anything more than a simple gauge of how new students intuitively sense ethics. The question you’re asking here is already extending past that goal, and getting into the territory of trying to determine what the objectively best answer is: https://www.currentaffairs.org/2017/11/the-trolley-problem-will-tell-you-nothing-useful-about-morality

“It’s very obvious what would happen if any of us ever encountered a “trolley problem” in real life. We would panic, do something rashly, and then watch in horror as one or more persons died a gruesome death before our eyes. We would probably end up with PTSD. Whatever we had ended up doing in the moment, we would probably feel guilty about for the rest of our lives: even if we had somehow miraculously managed to comply with a consistent set of consequentialist ethics, this would bring us little comfort.“