I switched over to piped.video and no ads. Just moved my subscriptions over. Not sure how long it will last but so far it's good

If that doesn't work, get the youtube enhancer extension. Turn off it's built in adblock. You'll have a bunch of buttons on the bottom of the video, one of which is remove ads, which becomes skip ads when an ad plays. You will still get ads, but you'll be able to instantly skip them all without setting off their adblock detector. (Ps, to get the bar in fullscreen, set it to bottom of window)