Your PS4 controller not connecting is frustrating. Here are two ways to fix a controller that won't connect wirelessly.
You can turn off parental controls on a PS4 with the set passcode, or you can factory reset your device.
The PS5 controller doesn't just work with the PS4, so you must pick up a Bluetooth adapter. This will usually come in the form of a USB device which needs to be plugged into the PS4. The adapter then ...
For gamers, backwards compatibility is always a "green" flag since this will allow them to play games from older consoles. It has been a cornerstone of console gaming for many years, to say the least.