

I use an Apple TV, but I assume it’s the same as any other streaming box or appropriate smart TV.
The absolute piece-of-piss way to block all YouTube ads on it is to install a VPN like Proton, choose a relevant country (easily googleable), and there will be no ads whatsoever in YouTube.
Google doesn’t serve ads on YouTube in a handful of countries.

If you’ve got a VPN, just install that on your Apple TV. Google doesn’t show ads in certain countries (the list is Googleable). That was an absolute game changer for me.