same here. I completely forgot how to use the internet without uBO or another decent adblocker. same reason i can't switch to iphone, they don't have a firefox with addon support.
There are decent adblockers for safari on both macOS and iOS.
Mozilla makes one for iOS, Firefox Focus, which you can setup as a content blocker. KaBlock exists for safari on both macos and ios. And there are many more.
Fwiw: Im using safari on both iOS and MacOS, macos with kablock and iOS with firefox focus and the experience has been good.
What am I missing on iOS safari + content blocker compared to firefox + ubo then? I used ubo on chrome on the desktop, but not a chrome user anymore. Honestly don’t see the difference compared to macos + kablock (and hush).