There is no uBlock Origin for Safari, which is the browser the vast majority of iPhone users use, there used to be a version for Safari but it was discontinued because Apple changed around it's ad-blocking API. So anything running iOS 13 and up (iPhone 8 and everything made after it) can't run uBlock Origin on Safari. The only solution is to use another browser like Chrome, or to stop using iOS.

A lot of investors still manage their portfolios from their mobile phones, and it's too easy on phones to accidentally click on an ad so they end up getting phished, and to me a phone isn't as secure as using a desktop with an ad blocker, for financial trading.