Vanadium does have ad blocking. It is just not as good as Brave or uBlock Origin.
I do second using a Chromium browser of some kind though. Brave, Vanadium, or Cromite. I understand people who prefer to avoid Chromium, but not sandboxing by site on Android is such a strange thing to avoid implementing for years & years. It defeats a lot of what you're trying to accomplish to use Gecko based browsers. On desktop? Have at it. Android? I wouldn't if you're the type of person who is installing GrapheneOS.