For me they use to work no more than 24 hours than Youtube forgots the setting. The most reliable way to really get rid of some kinds of content is to not watch

For me they use to work no more than 24 hours than Youtube forgots the setting. The most reliable way to really get rid of some kinds of content is to not watch it. Another way is to watch a lot of useful videos fully but maybe without sound, just to make Youtube think about me that I am fond of rocket science (otherwise it inevitable get to think that I'm fond of lowball things).