Thanks, Artie. The best one was adsfreeyoutube.com. I'd never heard of it. I will probably use it from now on. Adblock, etc., doesn't work for Youtube ads. They used to, but I think YouTube (Google) found a way around it and now the ad blockers don't work on YouTube.
I don't want Chrome. But, in the end, I found adsfreeyoutube.com so thanks.
MacBook Pro - M2, Ventura 13.6 Safari Tech Prev 17.0 Safari 16.6 Firefox 116.0.2 iPhone 7 Version 15.8