After that, you should pair and sync the controller on PS4.
Therefore, its necessary to list some useful solutions on this MiniTool page to deal withPS4 controller repair.
Some common PS4 controller issues are summarized in the following content.

Meanwhile, the corresponding fixes are provided.
When you find your PS4 controller not working, c’mon resort to the following methods ASAP!
Lets take a look at the specific steps to troubleshoot them separately.

Method 1: connect a wired controller to PS4 with USB cable.
Method 2: connect a wireless controller to PS4 with USB cable.
Method 3: connect a controller to PS4 via Bluetooth.

What to do if the PS4 controller wont connect to PC?
Method 1: put the PS4 controller upside down and charge again.
Method 2: reset the DS4 controller.
Method 3: check the charging cable.
kindly use the PS4s official charging cable to take a stab at change another controller.
Method 4: check the charging port.
Method 5: check the battery.
Thus, it’s possible for you to replace it with a new battery.
Method 1: sync with USB cable.
Method 2: sync via Bluetooth.
Method 3: reset the DS4 controller and take another crack.
What about the PS4 controller repair on DS4 controller light blinking orange or controller buttons sticking?
Tips On Adding An External Drive To Your PS4 Or PS4 Pro | Guide.