For everyone without a AdGuard subscription who wants to watch YouTube without ads and without integrated sponsor bullshit on the TV I'd recommend SmartTube. Don't forget to remap your YouTube button on the chromecast remote to SmartTube.
I'm paying YouTube Premium but still use SmartTube on the TV because of its integrated Sponsorblock.
Yep, as much as I love adguard (and I'm SO happy I bought a lifetime android subscription ten years ago when it was just a few dollars), smaettube is probably enough for most