I've tried out different lock screen shortcuts on my iPhone in iOS 18 — these are my 9 favorites
Simply press and hold on your lock screen, tapping on the Customize button that pops up. After you select the lock screen to edit, look down at the bottom of the screen where the Control Center shortcuts are. Tap on the minus button at the top of the shortcut, you want to customize, followed by the plus button to add a new control.