In my DAW.... and all the cake platforms I use....
When I set up an audio track for recording, it always defaults to STEREO. I normally have my guitar and vocal mic in the audio input for the left side.
If I let it roll like that I end up with the exact scenario you are describing. Sound on one side only.
I must go into the track input selection and choose the LEFT side. This selection ensures the track is looking at the left input only and it then places the audio in the "center" of the track. I am able to pan it right or left. It's still only mono, but that is OK.... because it is pannable to the right or left by any degree.
It matters not if you use the right or the left input. Either will get you mono source "centered" in the track and it will be pannable.