I use Vivaldi browser but the iOS version is lacking some defining features compared to Android or desktop versions. Not delved into alternative browsers on iOS much (Vivaldi is what I use on everything what), but from what I tried they're not as polished as safari since it wasn't that long ago that apple allowed you to even set the default browser in iOS.
Definitely monopolist strategy but unfortunately most apple users see the closed ecosystem as a selling point so hard to see it changing