I'm at the laptop and can only hear the sound in my left ear. They work normally on a mobile phone.
Does the socket have a wobbly? Or the cable?
I've had that before, I guess it's a broken cable. I just bought new headphones 😂.
Yes a little
For me it is sometimes the case that my headphones switch from the left to the right side in terms of sound! I think it depends on what sounds the video has
There you have I guess your answer.