In addition to the comments by rdwebdesign, a few more thoughts:
-
Pi-hole cannot reliably block YT ads, since the ads are served from the same domains as the content.
-
Browser based adblockers (i.e. uBlock Origin) can block YT ads, but you have to be watching YT on a browser with that extension installed.
-
The most reliable method of blocking YT ads is a subscription to YT Premium. This subscription applies at your account level, and will not show ads on any device that is logged into your account.