Bluetooth headset does not work on my Zoom meetings

[yumikosan]

Hi, I bought a new android tablet (a very minor item) and although my bluetooth headset works in other applications like hearing youtube, it does not work on zoom meetings. Microphone and audio comes from the tablet itself. I tried the nearby device settings (it's on), reinstalling zoom, and restarting the system. I even did factory reset of the tablet and it still doesn't work.

using a wired earphone with microphone works. 

How can I make my bluetooth headset work?