When a community reviewer finds that your video is not advertiser-friendly, that is, a piece of material that YouTube partner businesses may not want to be connected with in the eyes of the consumers they are trying to target, your YouTube channel may be demonetized.
While YouTube often would not remove your demonetized video immediately, you will no longer be able to monetize it with ads going forward.
1. You Uploaded Something Inappropriate, Dangerous, or Rude -
One thing that is immediately made clear by the YouTube demonetization rules is that harassment, cyberbullying, and hate speech are all forbidden on this website. However, obscene material may not always be shocking or contain foul comedy.
2. You Use Profanity in Your Video -
On YouTube, profanity is not necessarily forbidden. Slurs, excessive vulgarity in your thumbnail image, and excessive profanity other than your standard four-letter favourites are all against YouTube rules for producing ad-friendly content.
3. Your Video Is Too Explicitly Sexual -
Vague innuendos are typically permissible, as is censored nudity used for humorous effect. Any scientific or educational reference to items of a sexual nature, such as nudity in a Renaissance picture, is generally acceptable. However, you should avoid including anything that goes beyond these disclaimers in your YouTube video