Your Algorithm is the worst that I've ever seen in my lifetime. Constantly recommending videos I've already seen, and completely unrelated videos that are the opposite of my interests, isn't the way to make users keep using your platform. Even your User Interface purposely makes buttons small so that users more likely to click on videos. It's an all-around mess. I'm predicting that your App will get destroyed by anyone who actually cares about UI/UX Design and a more functional Algorithm.