The question is stupid, but I just want to make sure three times.
My laptop already has a camera and microphone, do I still need an extra mirko / webcam? I'm not concerned with quality. I only saw classmates talk about it and said they needed something extra.
No you don't need. Why then?!
But it could be more convenient with a headset.
No, desktop PCs need this extra. I personally connected a large membrane microphone to my laptop because I care about the quality.
So no, you don't need it.
The built-in mics are mostly a shice. I have a headset with mic for chatting. A clear communication is possible and nobody listens.
No. I only have a tablet as a student and there's also a camera and microphone installed. It is also quite normal. You don't need more.