Lol not trying be rude but this video is bs xD you need to open your controller and clean the sensors and joystick with alcohol if it doesn't work I'd recommend buying another one or check if u can find pieces on ***
Also you can find videos on YouTube that show you how, if you decide to do it be careful and watch each steps carefully to make sure you don't break anything especially the 2 wires that are connected for the vibration