how to record myself with tracks using device mic

[Hans Peter Augustesen]

You have an interface - it is the internal type.

And the MacBook microphone belongs to that internal interface.

So just use that interface and microphone when configurating JamKazam.

I can see no problem.

Then you can record all sound coming through the mic,

And record while playing JamTracks, I assume. I have never tried that.

But you can record while playing audio files from your hard drive.

You can not record while playing recordings.

Good luck!