Other than what others have said, the issue with iOS is that it's a walled garden. With iOS, you can only use or do things Apple approves of. Meanwhile, even stock Android can be mostly de-Googled. I'm able to sideload apps or entire pro-freedom app stores like F-Droid, which allows me to install all sorts of private-friendly open source apps. I can even install a private front-end for Google Play in the form of Aurora Store to get whatever apps I want without having them tied to my Google account. Shoot, I can even grab apps direct from the GitHub repo via Obtainium if I want.

I literally used F-Droid to download an app called Shizuku that simulates root access (without actually needing it). I ran another app on top of it, called Canta, which let me strip out almost every bit of Google and Samsung spyware bloat, even if you have no way to do so through the OS.

You can even install custom versions of the Android OS if you're able to unlock your phone's boot loader (I couldn't get it to work so I went the Shizuku/Canta method instead). Unfortunately, only some phones can use specific custom ROMs.

It's not really a brand loyalty thing that makes Android an objectively better option. Use what you like, I won't shame you for liking iOS. I just wanted to offer some insight on why Android is significantly better for privacy and freedom.