Firefox may be the best broadly available choice. However, Mozilla is just as guilty of implementing censorship in their extension store based on the whims of their leaders and employees. They are also a proponent of censorship more broadly than what they control. See https://reclaimthenet.org/firefox-maker-mozilla-calls-for-mo... or https://reclaimthenet.org/firefox-introduces-extension-that-... or https://reclaimthenet.org/firefox-rejects-free-speech-bans-f...