Youtube videos and advertisements supplied by google allow google to track you just by being on a website! On many sites, even without you clicking an ad or playing a video, google can store information about you and what sites you access, then sell that information. I've selected a privacy option when embedding on this site so google cannot track your information unless you click on the video. I've also removed default permissions youtube adds to their embed code that allows them access to unnecessary data including gyroscope and accelerometer data.
For information on how to take back control of your data Click Here