Do not use sketchy "FNAF map generator" websites or random EXE files. Stick to reputable non-Steam modding repositories.
Websites like GameMaps or GarrysMod.org (archives) are the standard for non-Steam downloads. fnaf 1 map gmod download no steam better
Some creators host their map source files on GitHub. This is a great way to find the most "raw" and uncompressed versions of the pizzeria. Why the "Better" Version Matters Do not use sketchy "FNAF map generator" websites
Here is a helpful guide on where to find these files and, more importantly, for your gameplay experience. for your gameplay experience.