It's impossible for me to use YouTube with the app. Safari + uBlock origin lite and I never see an ad.
Most YouTubers still have sponsor sections on their videos so you probably do see some ads. Also why not pay for YouTube premium to remove the ads while still supporting the creators?
DuckDuckGo app and "Duck Player" deletes the ads.
Yes we're solving an app problem with another app, but just highlighting that is a solution for the ads.