There are mutual fans of both Minecraft and Five Nights at Freddy's despite one being a survival/creative sandbox game and the other a horror game with plenty of backstory and intriguing animatronic ...

Create a "mods" folder within the game folder if one doesn't already exist. Copy the shader loader mod file (OptiFine HD or Iris Shaders Mod) into the "mods" folder. After that, create a "shaderpacks" ...