Lenovo Android Tablet 8 – Recording with Outside microphone
Use Open Camera app! 😁
https://play.google.com/store/apps/details?id=net.sourceforge.opencamera
Setting > Video setting > Audio source > Change : External Mic (if present)
More info:
https://askfred.be/blog/how-to-record-video-with-an-external-microphone-samsung-s9