A lot of this is just personality. Some kids are very emotional and dramatic, and cry a lot. My toddler cries much less than my dramatic and intense 9-year-old. To me, the important thing is to not get dragged into the drama. Let them cry but stay solid and calm. For my dramatic child, things start to snowball if someone else gets emotional too and that ends up feeding the drama. But being calm is like a rock to hold onto and helps her.
This. Some kids are just more emotional or dramatic. It's a temperament issue.