You might not want to continuously watch YouTube videos when you came to only watch just one. To save yourself from watching too many videos, here's how to turn off YouTube autoplay.
Step 1: Sign in to YouTube
Step 2: Navigate to any video
Step 3: Turn off YouTube Autoplay
If your browser window is more than 1000 pixels wide, YouTube's Autoplay button will appear to the right of the video.
If your browser window is less than 1000 pixels wide, YouTube's Autoplay button will appear below the video description and to the right of the video that's up next.