On desktop, either use: → LibreWolf (FireFox); uBlock Origin is installed by default. → Vivaldi browser (Chromium); has a native ad blocker, but obviously supports extensions, and will try supporting manifest V2 as long as possible until June 2025 [the wording is ambiguous so I asked on their forum]. Also, why the “not completely open source” criticism is unwarranted.

On Android: → Mull