Here is a Reddit comment on how to get some more weird stuff on YouTube

I know this is old but it’s a weird glitch in youtube’s algorithm that recommends a bunch of strange videos, specifically elsa-gate and other random videos. It doesn’t work anymore I think but I found searching “jdjdjdjdj🥰s” for some reason gives similar results, also searching “💀, 💀🐛 , 🤢 , 💩 ,🔪💀🫀” gives the same effect but I’ve found that these videos are significally worse (first video was Naga style of butchering and other horror things), So the glitch is still active pretty much. There are other search results that can trigger this such as ” #..__..__..__”, “/.. ⚽+🐧+☕+🌳🌳+🐘”
But easily the worst one you could search is “ø·ø ̈ùšù„ø© ø£øoù†ùšø© ù„ù„ø£ø·ù ø§ù„ ù„ùšø ̈ùšø§ шрек0” These videos are potentially life changing, and not in the good way. These videos are horribly disgusting and horrid. I recommend NEVER searching that because I’m pretty sure some of those videos are actual gore. Also a lot of horror videos.
Hope this helps