(FNAF LORE AND MOVIE SPOILERS!)
This would be a 5/5 but there was some things I just wasn't sure about. The movie in general was great but not the best. I think it would be better if the lore was more...well...fnaf lore. Example, 5 kids in the movie but 4 are boys, 1 is a girl (I think) and I thought 2 girls died, Cassidy and Susie (I may be mistaken). Also, I thought the Bite of 83 should have been a must have in the movie and maybe even William killing the 5 kids just to add some more deaths. Also, why was Mike's brother kidnapped. THAT should have been the bite of 83 and I dont know why Abby was there instead of Elizabeth. If this were possible, maybe show on screen the people dying. I am still a bit clueless on how Aunt Jane died. My guesses are being strangled, poisoned, or getting her neck snapped since there was no blood. I also think when Freddy screamed, it should have been maybe a edited version of the FNAF 1 jumpscare. Another comment is that Golden Freddy should have NOT been withered. He should have just looked normal, it would be helpful. One last thing is Max's death. I know Freddy's spirit is well...a spirit but even a kid can't just pick up a girl that easily. I think what should have happened is the door gets locked and Freddy's eyes glow while playing the music box sound and Max is desperate, trying to get out but then gets her head bitten off. I feel like that would be a bit better, no offense.
Now to the positive stuff! First of all, THE CAST FITS PERFECTLY. I also was AMAZED with the fact that they got your boy Cory up in the film. The fact that they for real used TLT's FNAF song for the credits, MASTERPIECE! I also like how the gang of people all got killed, I kinda just wish they were on-screen though. I loved the suspense and effects too and the moments when the animatronics were being "nice", it was amazing!
Overall, I recommend you watch the movie :D