Hard Reset should be done only in extreme cases. This type of reboot iPhone 8 Plus is applied if the smartphone has ceased to respond to user actions and corny hangs.
In all other cases, you should perform a standard device shutdown by holding the Power button (Side button).
1. Press and release the VOLUME UP button. 2. Press and release the VOLUME DOWN button. 3. Hold and hold the POWER button (Side button) until the Apple logo appears.
You need to do this fairly quickly with a minimum delay between clicks.