Please follow the instructions below:
- Sign in to YouTube. In the top right-hand corner, click on your account icon and then go to Creator Studio
- In the left-hand menu, select Channel and then Status and Features
- From the Status and Features list, select Advanced
- There will be a heading “Advertisements” and a question “Allow advertisements to be displayed alongside my videos” – make sure the box is unchecked.
- Scroll down and click “Save”.