Some services like Youtube are using techniques to prevent ad-blockers from blocking their ads. It is unfortunately impossible to block them using DNS ad blocking at this time.
Does Messenger ads work like Youtube?! It's frustrating to always ignore in-app advertising
Jose Santos Christian
You can use Adguard, they now have feature to share youtube video on adguard app and play ad free directlt from adguard but each time you need to share video in adguard app to play ad free
Use YouTube Venced app but I recommend not to use your Google gmail to signin because YouTube is against Venced app.
I hope you found this helpful.
If you are on Android use the New Pipe app. No ads.