This thumbnail is completely stolen from a YouTuber by the name of superhorrorbro. Thumbnail art theft is incredibly low and a downright scummy practice. Shame on you!
Understandable. One way to easily determine if it's another YouTubers thumbnail is by looking at the images text description that can be found under the image in most cases. If that title links you to a YouTubers video, that's a clear indication that it's a YouTuber's thumbnail.