Sharing the same concerns of iOS 18 to begin with, in fact since iOS 14 or 15, I now do not switch to the latest operating system. Around July each year, I jump to the next major OS, because by this time, Apple fixes the bugs - or at least most of them, and the operating system becomes close to major-bug-free. If you just ignore the new releases around September October, watch the announcements with smile, feel sorry for those who will take the bait and update their devices to the latest and greatest OS; you will be fine. Just be patient until next summer, knowing that at least from a security point of view, Apple will look after you perfectly and you really don't need to use every new feature as soon as they are announced. Then it's all good. Apple should calm down. They really should.