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Just reloading won't help, you need to actively train the algorithm by telling it what videos you don't like and why. It also lets you stop showing recommendations from a given channel altogether. On Facebook I've trained the algorithm to never show me any ads because I keep marking every ad that pops up as irrelevant and then 'hide all ads from this advertiser', and by also not following any celebrity, corporate or brand pages.

I agree, if it's shown you something a few times, and you haven't watched it, replace that suggestion with something else.

Every few weeks I end up with a new video card with button that takes the place of the video and it asks if i want to see something other than what it usually recommends. It's not quite as out there as I'd like, but it did shake things up a bit.