Maybe the ads depend on how much content you're consuming? Before I got premium I would notice the ads would get more numerous the more number of videos I watch

Maybe the ads depend on how much content you're consuming? Before I got premium I would notice the ads would get more numerous the more number of videos I watched. And would start getting more unskippable ads and multiple ones. I guess I liked to sample videos and switch to a different one so it got annoying fast. I couldn't block ads on my smart TV app so I gave up and subbed. Premium also helps a lot when I watch YT on my Oculus Quest 2.