macOS and iOS are rapidly becoming adware for Apple’s services. Any tricks to disabling these ads will likely be “corrected” by Apple in future release updates.
Serious question: why buy an Apple device if you're not going to use their ecosystem? It seems like that would defeat the purpose, might as well get a cheaper android at that point.
I'd like to know too (assuming you mean macOS). I even deleted the iCloud account hoping that would silence it...
https://osxdaily.com/2021/10/30/dont-use-icloud-how-to-remov...