If you don't care about music or background play, and all you want is to eliminate ads, YouTube Premium Lite is $8/month.

https://support.google.com/youtube/answer/15968883

> Wait a minute, why is mine $13.99 a month?

Only the earliest google music people are still grandfathered in at the insanely low rate. The rest of us have been "upgraded" to at least $14/mo.