@TeamYouTube I have never ever watched a Fortnite gameplay video or anything of the sort why is literally 50% of my recommended videos fortnite or some random foreign videos in languages I cannot even understand? Your system is messed up.
Try these steps: Tap the 3 dot menu > Not interested > Tell us why > I'm not interested in this channel. Also, our Help Center resource has info on how to improve your recommendations: https://goo.gl/mwxH46 . Hope this helps!