Press and hold the Side button and the Volume Down button at the same time
Tap Power off on the screen
Tap Power off again to confirm
If the buttons do not work, swipe down twice from the top of the screen
Tap the Power icon in the Quick Settings panel
Tap Power off
If the phone is frozen, press and hold the Side button and the Volume Down button for about 10 to 15 seconds until it restarts or turns off