Premise: Mockumentary Research

A mockumentary, a combination of mock and documentary, tells comedic storylines in a straightforward manner. So what makes a good mockumentary??? 

Exaggerate relatable clichés - A great way to help the audience connect with your film is to put in characters they can relate to.

Interviews - only use the interviews to put an emphasis on a situation, overusing interviews can make the story drag. Talking head interviews are a terrific tool in a mockumentary. They explain what a character is feeling, add a twist to a scene, pace a scene, or help build a misunderstanding between characters to hilarious results. However, they can’t be used too often, as they then become a significant part of the film and take us out of the action. They should be used like spices, lightly, but to great effect.

Handheld or Shaky Footage Is OK - A mockumentary keeps the feel of a standard documentary, in which the camera operator is typically using an over-the-shoulder camera. It is standard to have handeld or shaky footage, thus, it’s totally normal to see some shake and zoom in footage.

Don't use more than two cameras - if you can pull of a mockumentary with only one camera, that’s the best option. Using two cameras is ok, as it allows editors to cut when there is a lull in the story. Also, if an improv scene drags on, the editor can cut to a reaction shot or another angle to remove the unnecessary dialogue.

Make it real - The realer it feels, the more comedic it will feel.

Improvisation - don't be afraid to improvise, if it's unexpected it will make the footage seem more genuine.

Your characters should never be in on the joke - keep an authoritative tone, both in dialogue and storyline. The words and settings must seem totally natural. Characters should be likeable. 

Sources:
https://www.premiumbeat.com/blog/11-tips-making-mockumentary/
https://www.raindance.org/ingredients-great-mockumentary/
https://penandthepad.com/write-mockumentary-2209814.html
https://skulldugfilms.com/looksdarkblog/2012/10/20/dont-mock-the-mockumentary-4-ways-the-mockumentary-style-can-save-your-indie-budget/