If you want to use uBlock Origin on iOS, there's Orion browser. Enabling extensions and installing uBlock Origin on it requires a tedious step and the app is noticeably slower to respond and just overall worse and buggier than Safari, but the ad blocking works.

https://apps.apple.com/ca/app/orion-browser-by-kagi/id148449...

https://help.kagi.com/orion/browser-extensions/ios-ipados-ex...