In FF, use either AdBlockerPlus, which is a memory hog, or Ublock Origin, which is gentler on resources. In Chrome and Opera, I think it's AdBlock Plus. I don't see any ads, except if a hit involves viewing ads.
There are a few. Looking for a hatchback, pref Japanese, because Toyotas and Hondas last forever. I need to see how much my benefactor can help. And I always buy privately, not from a dealer. It's depressing and frustrating.