I think my AirPods 2nd generation, that I bought are fake what are things I need to look out for

They won’t let me speak in the microphone when I want to speak to siri, the little speaker part u put in your ear it doesn’t look like anyone else’s so I know something is wrong it doesn’t let me walk more than at least 20 or 30 feet away from my phone then it and I can’t even use live listen!