What is the IFB community?

A new documentary came out on Amazon Prime Video a few days ago called "Shiny Happy People". It talks about the IBLP (institute in basic life principles), which is a very strict denomination that's fairly related to the IFB (independent fundamental baptist) crowd in which I've grown up in. These denominations may look great and put together on the outside, but so much more lies beyond the surface. I wanted to share my personal experience with it after seeing so many stories of other people coming out to share about their own. Maybe mine will help give insight on what it was like or it might offer comfort to those who have been in the same boat.