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 Yes, probably, try oisd and adguard dns filter lists... if its still unfiltered yes probably yes then
dns blocking cant block youtube ads
If you are on Android use the New Pipe app. No ads.