Secure Browsing on iOS? Firefox vs Safari…

I’m trying to take further steps in securing my privacy online. I’m not really knowledgeable about cybersecurity so please be patient with me if I sound dumb or if this has already been asked lol. I downloaded AdGuard and synced it with Safari on my iPhone. Does this offer more privacy protection than Firefox? AdGuard isn’t available to be synced with Firefox on iOS.

There’s some backlash about Brave on a few subs about privacy so I don’t care to …

firefox ios privacy safari secure browsing vs