Fair point, I use Ublock Origin and don't see any ads at all.

I suspect the downvotes are for the layers upon layers of ads that pop up, cover the video, steal click attempts on the player, etc... so if that's the case, a better source would be any site that doesn't have those issues--e.g., pornhub, xvideos? But I'm not a mod, and I didn't downvote (just commented).