I block all youtube channels with that stupid checkbox next to it from my search results. you can do the same by adding this ublock origin filter:
youtube.com##ytd-search :is(ytd-video-renderer, ytd-channel-renderer):has(.badge-style-type-verified)
youtube.com##ytd-search :is(ytd-video-renderer, ytd-channel-renderer):has(.badge-style-type-verified)
Instead of blanket filtering verified accounts, I spent a few minutes one day plugging in all the obnoxious channels that show up on YT's homepage when signed out.