PS4 controller does not connect?

My problem is that my PS4 controller does not connect to my PS4 anymore

I connected my controller to my phone two days ago by pressing the Share and PS button since it stops connecting to my ps4 I searched the internet and Dr Google said I should plug a USB cable into my ps4 and then my controller also close to the cable and as the last press the PS button that I have made spoiler alarm it is nothing happened how do I connect my controller again with my PS4

As far as I know you have now set the cable connection for the controller so it works only via USB cable s.der console so you have to turn on the console then connect the controller to the console and then he should respond as you do this now reversed I know now not exactly is somewhere in the settings of devices, I believe you have to then switch back to wireless connection