Megan Is Missing is not based on real events. It's a work of fiction that uses elements of horror and mystery to engage the audience. The plot and characters are created for the purpose of entertainment rather than representing actual happenings.
Since we only know the title 'the real megan is missing story', it's difficult to say exactly who Megan is. She might be a young girl from a small town, or a woman living in a big city. Maybe she has a family, friends, and a job that are all affected by her disappearance.
Hard to say for sure. It might be based on a real incident that was then embellished or fictionalized to make it more engaging. Without further information, it's difficult to determine its authenticity completely.
I don't think it is. Many such stories are works of imagination, designed to capture the reader's attention and offer a unique narrative that isn't tied to real-life occurrences.