@YouTube how do I get you to believe that I do not now, nor will I ever, be interested in watching a new music video? My clicking "not interested, don't like video" or "don't recommend this channel" on every one you put in my feed for the last year hasn't worked.
Recommendations are automatically selected based on many signals, such as your Google/YouTube activity and watch & search history. Try managing your recommendations here: https://yt.be/help/cJiM