piipoppu wrote:
I have no tolerance to abrupt changes and what I need is to be warned about it much beforehand and Apple didn't warn it when I updated my phone for safety and doesn't give the option to turn it off.
What's done is done. There is no going back. I'm sorry that it will be unpleasant for you, but there's really nothing anyone can do to give you back the old operating system.
I suggest, in the future, that when a major update is released (they usually happen in September), that you wait a couple of weeks and see what people are saying about it. Read the articles online. Once you understand what is happening, then you can update.
You did have the option to stay with iOS 18. There were security releases for it. So, from a security standpoint, you didn't need to update.
You can also let Apple know your thoughts here:
Product Feedback - Apple