IRL we typically do what we feel and justify it later, but then IRL there is no right or wrong, except what we construct in the process of organizing with each other to cooperate against outward threats such as predators and the elements. We have agreed to poor conditions because our lords were kinder than the winter and the bears, but then we've also overthrown our lords when we worked out they need us more than we need them.
But yes, if you want to pretend that moral philosophy is just cerebral masturbation, that's valid. All of our philosophy is about the opinions of past thinkers about the perimeters of right and wrong. It will give you a clear answer about as well as religious philosophy might tell you which patheon of gods is the true one.
These scenarios are less about what is right or wrong, but about how you, individually and personally, decide ad hoc what is right or wrong. You might distrust the soldiers, but then if they were inclined to betray your trust with a lie, they might have never intended you to go free either, and the whole story becomes irrelevant.
Another Trolley-like features a stranger come to town who is a perfect match for five transplant patients waiting organs. The surgeon / hospital administrator has a friend in organized crime who can abduct the stranger and harvest his organs quietly and cleanly so that the authorities won't notice he disappeared. Although IRL, having a transplant is a mortal condition. Having the organ buys more time than not having the organ. Also this doesn't get into the risks of other complications of transplant surgery that can occur even when an organ is a good match.
These scenarios are not about real life, but about becoming more self aware of how you'd consider these. And yes, this may mean looking for third options, hoping to find one better than the two obvious ones.