I can hear them while making call from Apple watch 5 but they can't hear me - when using watch to answer phone calls

I have IPhone 11 Pro and Apple Watch 5 with Esim connection. I used to make the calls from Apple Watch without IPhone near to me. Since some time the problem started that I can hear from other end but the other couldn’t hear me.

So help me how can the problem get fixed with your help.

Dhanadevan