The best recommendation system for me is none at all.

I recommend using an extension called 'Improve YouTube!' [1], which allows to collapse/hide recommendations/comments/ads/related videos/autoplay etc.

There's also YouTube Vanced [2], which allows some of these things on Android.

1. https://chrome.google.com/webstore/detail/improve-youtube-vi...

2. https://vancedapp.com/