How can I pass through my microphone to Cloud Gaming on the Xbox?

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today Cameronsly

Right now the support for the Steam deck is very limited
If you want to use the party chat feature the best option is use the Xbox mobile app in your phone and talk with your friends in that way

Hi Zildjian my name is Belle. I'd love to help!

In order to play on your mobile through cloud gaming, you would need to have a game pass Ultimate.

Xbox Live Gold will only give you access to play online through your console. While Game pass Ultimate includes gold, game pass for PC, game pass for console, EA play.

For your reference, you can check how cloud gaming works here: https://support.xbox.com/help/games-apps/cloud-...

You cannot use a microphone over Bluetooth with cloud gaming, hardwired through the controller only at this time

Anyone with a Microsoft account can join an Xbox party through their mobile device on the Xbox app for example

Hi, my name is Ezequiel and thank you for your question and for reaching out. Hello DracoArgentis how are you?

If you are a Game Pass Ultimate subscriber you can play cloud games on any platform.

Yes, you can play through the browser or through the Xbox app on your laptop.

Hello,

If it’s Game Pass Ultimate, you can still play supported games through the cloud on a compatible device. An internet connection and being in one of the supported countries/regions is required, though.

How to use cloud gaming | Xbox Support

All the games that can be played through the cloud:

https://www.xbox.com/play/gallery/all-games

Additional support resources regarding subscriptions are included here:

Subscriptions & billing | Xbox Support

Hope this helps.