Recording a guitar

I started to record my gtr & in default to a stereo track - but the right meter only recorded. Then I wanted add more of the piece and the previous recording was deleted. When recording a gtr should it a mono track - if it can be a stereo track how do I set it so both meters will be receiving the sound - and how do I record other parts of the piece without the previous parts being deleted. :question:

Set the number of recording channels to “1 (mono)”

I don’t know how you managed to lose the other track, but perhaps this will help: