[PSA] How to use your Steam Deck as a PC controller
xda-developers.com
Easiest way is by using remote play, you'll want to change settings to enable audio on the host, and possibly lower stream bandwidth.
The guide also has another more in depth method.
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Can you provide some insight on how to do this?
More than the linked guide?
Oops my bad, I didn't even see the link, thought OP posted a text post.