Win 10 - Realtec built in mic - extremelly low volume

[Rasa]

Hi - just trying Jamkazam on my Dell Windows 10 laptop with built in speakers and mic (Realtec). The issue I have is that, when I record the session and do playback - the volume is extremely low and I can't get it nowhere acceptable level. I tried adjusting Mic volume in Sound Settings, allowing exclusive use of Mike to applications etc. and none of this worked. If I use the same setting on other apps (Zoom, Skype, Audacity) - it records fine and volumes are good. 
Anybody has any suggestion? If this is mic compatibility issue with Jamkazam - is there an external Mic that would work with Jamkazam that you can recommend that would be good for Acoustic Playing? 
Thank you.