The YouTube ads came back today, things were working until I went outside to jog, I left Microsoft Edge open, and when I got back; YouTube ads were trying to come through again and Malwarebytes Browser Guard had to block them.
So I disabled Malwarebytes Browser Guard, checked for Adguard updates & filter updates, refreshed my browser tab, opened up a new YouTube video in a different tab, and some ads were still coming through.
I might save or send an Adguard log to Adguard before I uninstall Adguard, and go back to uBlock Origin combined with Malwarebytes Browser Guard; I have Adguard lifetime licenses, so I can always come back & try it again in the future off & on to see if it improves & to report issues.