I don't know why but when I launch the game the textures are just... not working...
Hi Springtrap_GamingYT, that error may occur when the game has not enough VRAM to load the textures. It requires a bare minimum of 1.5GB of free VRAM to work (2GB is recommended though). In rare cases it can also be caused by the Vulkan API on some integrated GPUs you can try switching to OpenGL by creating a shortcut to the game and adding
--rendering-driver opengl3
in the target field just after the .exe and outside the quotes if any.