Invidio.us instances are not as reliable, stable, in my (7 years ago) experience. Wonder if it's gotten any better...
YouTube with uBlock Origin in Firefox (or Brave on mobile) blocks all ads
When I want to watch YouTube on my Roku (TV) to block ads, PLUS ad reads* I added the PlayLet channel. Go to your Roku account (web browser) search for it, and add it, then it appears on your channel list in your Roku TV's menu. It's the cat's pajamas AND the bee's knees.
* where the creator sits there and goes on and on for several minutes "This video is sponsored by BetterHelp/AG/Nord VPN/what-have-you)