Md. Tarikul Islam
Dear User,
Thanks for reaching here in MIUI sub forum. Sorry for the inconvenience. This issue is already reported. Kindly wait for future updates.

I have the same issue with my new Redmi note 10 pro.
Mic is creating a very loud noise while speaking and turning my speaker on.
But when speaker is off, mic works fine.
I hope you can get a fix soon.
Its so disappointing as i use internet video calls frequently