Let's be real:

Working on simple and basic lores and/or stories are doubtlessly torture and short term "complicated" than you can ever imagine. If there's no FNAF stories, no FNAF lores, then there's no FNAF.

making lores and/or stories(especially the first time) are expected to be easy, creative and fun, but in reality, it's struggling, most stressing, and fogged-brain, and too much pressure.

As myself FNAF Fangame Developer wannabe, sometimes it happens to be burnout, motivation dying, or ideas flying away real quick. Even if the story or lore becomes absolute garbage, it had to start all over again, multiple times.