Best DNS Adblocker for my router

I'm thinking of using a DNS Adblocker. Which one can you recommend?

I have YouTube installed in my television, will ads be blocked?

Can a DNS block ads in games on iPads and iPhones?

Setup a Pi-Hole, add the parsed, moderated blacklists and you are good. Easy, cheap, secured. Pi-Hole stops them all from hitting your network and speeds DNS lookups. On setup assign a static to Pi-Hole outside of your DHCP scope, then direct your router DNS to point BACK to Pi-Hole and you are gold. It doesn't really require anything but very basic tech knowledge. (VERY BASIC)

Pi-hole®: A black hole for Internet advertisements

Parsed blacklists;
Mirrored Lists ¦ Firebog

Put it on a nice Pi Kit like this, uses 2.5 watts.
https://www.amazon.com/gp/product/B01D92SSX6