Possibly lost FnaF 2015 fan animation

Hi! I'm not sure if this is the right place to post this, but I was hoping for some help from fellow FnaF fans who might've previously seen this.

I'm looking for help finding an old FnaF animation. I definitely remember seeing it in 2015/2016 since I was a child and remember it traumatising me when I was younger. It was on the eerie side of fan animations, and was also quite long and high quality for the time (being about 10/20 minutes). I don't remember all too much about it except that it focused heavily on one particular child, and had a style that is very reminiscent of 90's kid's animation. A couple of scenes stick out in my mind, one of the child it focused on walking down a hall of masks, and another of a group of children huddled in a closet of some kind while hiding from an animatronic.

Unfortunately my memory on the subject is hazy so I'm not sure how many more details I'd be able to give, but I know 100% that it was on youtube at one point since I was a kid and didn't know where else to get media of things I liked.

Any help figuring out a name of the animation, or even where I could find it would be incredibly useful and I'd be so grateful. Thank you.