I use a browser plugin called "Channel blocker" to remove entire channels from YouTube search results and video suggestions. There's so much garbage out there and YT is always recommending irrelevant channels, that this plugin has saved me a ton of time and aggravation!

I use this plugin to block every channel that I see promoting either the et cepher or the passion "bibles". Same goes for those promoting flat-earthism. Any teacher who has fallen for these basic lies can't be trusted. They might be fine, upstanding people, but they aren't qualified to be teachers.