The “not interested” button, it does nothing!

When combined with “don’t recommend channel” and removing videos from your watch history, it works for content. Unless you actually partake in related content. For example: If you watch political content, you will get recommended stuff opposite to what you like, regardless of many times you click “not interested”.

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Although it should be mentioned that “not interested” does literally nothing when it comes to not seeing shorts, for that you need an extension or app that let you hide them.