one plus nord wireless earphone microphone not working on Ubuntu 22.04

I recently installed Ubuntu 22.04 on my old laptop lenovo thinkpad t430. I connected my one plus nord wireless earphone using Bluetooth. I'm able to hear audio but I'm not able to able to access microphone of one plus nord. I tried various solutions like given here :

1. Ubuntu 22.04 does not recognize my microphone's headset when plugging in, just audio

2. My microphone is not working

but still same issue.

When I'm using wired earphones I'm able to use audio and mic both of the wired earphones.