Microphone button on remote not receiving my voice

so a little background story I've had a fire stick in my Samsung TV for quite some time and after a while I feel it needs to be reset to factory defaults just so it can not have all that cache built up.

Usually, it works just fine no problems whatsoever but this time when I press the microphone button to talk to Alexa she doesn't hear me the remote has absolutely no input and I've checked the batteries they're brand new chargeable energizer batteries so just wondering if anybody else has had this problem and how do they fix it?

I'm very skilled with repairs I have the I fix it pro tool kit so if I need to take apart my remote I will I'm not worried about warranties I'm just wondering if anybody else just had this problem and how exactly can I fix it?