[savanaly]

It's not directly available in search but from the home page you can click the triple dot menu and click Don't recommend channel.

[post_break]

That doesn't remove a channel from search unfortunately.

[hwers]

I don’t even think it blocks the channel long term from your recommendations. I’m pretty sure they’ve tried to sneak in an old channel I’ve explicitly said not to recommend again in my recommendations via whatever multi armed bandit with noise algo they’re running.

[Akronymus]

I ended up adding more and more ublock origin block entries for each channel I REALLY want to avoid.