AirPods Pro 3 not working at all

My AirPods Pro 3 won’t connect to my iPhone. The LED light on the case doesn’t glow no matter what I do (including the double click on the case). I also tried charging them and even left them there for a couple of hours. This whole thing has happened before and I was told it might be the charger that’s affecting the AirPods, so I started using a different one. It worked for a while but now suddenly it happened again. I don’t really want to take them to the Apple Store to get new ones again, so what should I do?