LG K92 5G- I have Questions about Power Flex Cable Replacement

I would like to know if you have a guide for replacing the power button/finger print scanner. The screen repair guide helps but im curious if there is anything I should know about it. The phone turns on when plugged in showing it is charging, but when the power button is pressed the phone doesn't turn on. I have the new power button in and have stopped there, but was curious and had concerns of things that I may need to do or avoid doing. Also if replacing this should fix the issue.