Without using an adblocker of some sort, I’m not sure. But if you get something like uBlock Origin, the only ads you’ll ever see again on YouTube are ad reads embedded into the video by the creator. It’s made watching on any device without adblock absolutely untenable.

Just a little descriptor tag attached to a post or user. Mostly aesthetics in the subreddits I frequent, but can also be used to organize or filter posts or apparently, who can post on a given sub.