Even with uBlock Origin installed, I find Fandom to have a very high proportion of ads. For a while I tried blocking them individually through uBlock’s element zapper, but that proved a very short term solution. Too often, it worked only on that page and if I went to another entry on the same wiki, it would be loaded down with ads again. I gave up trying. uBlock is really good with ads on most sites, but Fandom has so many that uBlock can’t get rid of them all.