Give [Opera](https://apps.apple.com/us/app/opera-browser-private-vpn/id1411869974) a try. I don't have iOS so I can't confirm if they have extensions enabled, but you can then use [this guide](https://blogs.opera.com/tips-and-tricks/2021/10/using-addons-from-chrome-in-opera/) for using Chrome extensions such as Alby.

Good luck 🤞💜