How does an ordinary person adopt Right View concerning the the hardships of the Buddha's earthly life?
Well first putthujjanas won't know anything about the dhamma until they become at least sotapanna. Until this, all puthujjanas have is believes and doubt. It's completely normal.
All the puthujjanas can do is cultivate what the buddha recommend to be cultivated, that is the 8 fold path. This is pretty hard for anybody. It's worse when there is no buddha.
Since the big claim of the buddha was that craving causes dukkha, you test this and can keep a diary for a few weeks where

you note when you notice a craving
you note the object of your craving
you note when you do not crave some objects and in this case if you suffer from not-craving those objects
you note when you suffer
you note if you think that you suffering can be linked to some craving for something (ideas or just sense objects) and if you see them as part your self
you note what happens if you try to force to view as not-self all the stuff you so far view as self