Use Smartwatch microphone

Hi,

I have a samsung galaxy s8, and I use google assistant and bixby.
bixby for controlling my device and every thing else I use google assistant.

I like the feature that the phone always listen, so i can use a voice command without needing to have the phone in my hands. but sometimes I have to raise my voice to get it to activate.

So my though was if I could use the smartwatch microphone I could just take the smartwatch up to my mouth and say the command without having to raise my voice.

So in short I want to know if it is possible to send voice commands to my phone using the smartwatch microphone?

ps. I don't know if this is the right place to ask. if not then what forum should I try to ask this questing instead?