When people recommend Brave browser.

https://lemmy.blahaj.zone/post/40018890

Blåhaj Lemmy - Choose Your Interface

I’ve yet to find a browser on iOS that blocks ads as effectively. I’d like to use Firefox but they don’t seem interested in adding Adblock on their iOS app. I don’t want to use Brave but browsing the internet with ads is an absolute non-starter.

Don’t use iOS if you want that level of control

Apple blocks Firefox from shipping their own engine or having a add on store on iOS. Web browsers on iOS are just Safari wrappers since Apple purposely makes browsing the web shitty so that you use the App store