Such a site is called https://fnafgames.net/unblocked/ where you can play all of FNAF in your browser. For me, this was not just a convenient solution, but a really great way to quickly familiarize myself with the history of the game series. It turns out that the lore of the game is quite deep and interesting, much more heavily revealed than in the movie.
I guess I’d say I’m not against horror games, but I’m also not looking to get scared for no reason. If I do play something, I try to pick stuff that’s nice, positive, or at least neutral. And not too hard. That’s probably why I really like the games on Playhop — no downloads, totally free, even no sign-up needed. If anyone’s looking for a flash game alternative, give it a try.