I know it's a pain. Still not working but double tapping on screen locks it but I keep pressing the stupid side button 🙃. To turn off the phone I stroll down twice at the top to get to turn off but it was easier just to press and hold if I wanted to do it quickly. Now they want me to hold the volume down button as well.
Phone died completely and wouldn't even reboot 🙄 arranged to take it to store but decided to try the next morning. Rebooted and working fine. What a parlava but now all things working as they should buttons and all.