For whatever reason, we get this idea that using the word "people" in our writing sounds too common, too plain. So we choose a goofy substitute like "individuals" or "persons."
Yes, if you look up "person" in the dictionary, you're probably going to find that "persons" used to be a perfectly acceptable word to describe a defined number of people. But that was then; this is now. Today, "persons" just sounds too formal.
Even more stilted-sounding is "individuals." Using "individuals" in your writing makes it sound like a police report. Hey, I don't think it should even be used in a police report, for that matter. What distinction or clarification does "individuals" make over using "people"?
So when you're writing about more than one person, "people" is your go-to word. It gets the point across without sounding too stiff.
Persons will thank you for making the right word choice.