First of all, you might wanna try DLP or Reddit if your looking for stories. This is kinda the wrong place.
However it would be a lot easier for people to help you if you had an inkling as to where you read this story. It sounds out there enough that it should be easy to find if you know the website you read it on originally.
Additionally you could try https://fictionhunt.com or https://scryer.darklordpotter.net/.