Hello,
Unfortunately, it's not possible to get digital audio out of a standard 3.5mm stereo jack. Digital audio requires a different type of connection, such as HDMI, optical (Toslink), or coaxial. Since your receiver only has stereo analog inputs and your PC has analog audio outputs and devops, you'll need to use those analog connections. You won't be able to achieve 5.1 or 7.1 sound through analog connections, but you can still enjoy stereo audio. If you're looking for a surround sound experience, you may need to consider upgrading your equipment or finding a workaround, such as using an external audio interface or sound card with digital outputs if your PC supports it.
I hope this will help you.
Regards
Prisha singh