Galaxy A71 - Bluetooth Earbuds - Phone doesn't use the built-in microphones in my earbuds

[Dudzuki]

Hello, I have a question to ask. Recently I got a new phone (Samsung Galaxy A71). On a daily basis, I use earbuds (Nothing ear 2) to listen to music, or to make calls/record voice messages. My problem is that my phone doesn't use the built-in microphones in my earbuds, even though they are working (tested on my old phone Huawei Nova 3) where everything is working. In the bluetooth settings I can only turn on/off Audio and Calls settings (both are turned on), but my phone only uses the microphone that's in the phone, and doesn't use the built-in microphones in my earbuds. When I make a call or record something, it sounds like I'm far from the source because I have my phone in my hand or in my pocket most of the times. Can someone help me figure out why this is happening?