Cannot access channel ID, this is feed - https://www.googleapis.com/youtube/v3/search?q=UC4s21uoESnv2YY0VzZ9oEgw&key=AIzaSyDfDDHWTqJ6iOcASL3wLcpTvPWjmC-NnVk&type=channel&part=snippet

The request cannot be completed because you have exceeded your quota.

No videos to be found - https://www.googleapis.com/youtube/v3/channels?key=AIzaSyDfDDHWTqJ6iOcASL3wLcpTvPWjmC-NnVk&id=UC4s21uoESnv2YY0VzZ9oEgw&part=snippet&maxResults=10