Problem : When recording the second track it records the first track

I use audacity to record songs and what I do is get a track from YT to have as a first track and do my recordings on the second track.
But now when I press shift R it picks up the first track making it a double sound I also hear my voice on top of both sounds while recording.

Did I press something? because a while ago I was recording easily and I don’t have any problem.

I tried moving away my earphones while recording because I thought the sound from my earphones was getting picked up by my mic. But It wasn’t the case. I tried removing my earphones having no sound completely and it still records the first track.

This is the overdub error collection.

Anything there?