Loss of game sound through headphones

Go to the console settings, and under the video and audio settings, you can enable the option to hear game sound through your headphones.

On the same settings page, you can also choose to have either regular stereo sound coming through your headphones, or you can use "Windows Sonic" to get spatial 3D sound, similar to Dolby Atmos, or if you have purchased the full Dolby Atmos App, you can
also enable Dolby Atmos for headphones, and get Atmos 3D sound through your headphones.

After you've enabled game sound through your headphones, you can then choose the balance between game sound and chat sound with the sliders mentioned by the posts above.

yes the sound placement is very strange on that game, I had the same through my headphones

I'm having the same issues with my xbox. Someone said it would be the soundcard and I need to send the Xbox off to be checked which costs a fortune! I can't see how the soundcard can be an issue when I can hear the music through headphones when I plug them into the controller.

I've reset the TV, reset the Xbox. Can be playing a game with sound. Then go to the dashboard there's sound. Go into another game, no sound (unless through headphones) come back out of the game with no sound and there's sound on the dashboard. Go back into the game that had sound and the sound is still working.

Hard reset the Xbox, turn it back on. Go into a new game, sound doesn't work (unless through headphones). Go back to dashboard and sound is working. Go back to first game that had sound and that game still has sound.

It's so annoying and I don't seem to be able to speak to anyone about it

Can't answer that, but listening through headphones IS NOT surround sound.

As the page that XBF Javier R linked to explains, the console can't know if you use the headset for chat only or for game sound as well, and will not mute the TV sound output.

If you don't get game audio from your headset, but chat sound is working, then go to the settings, and under "Display & Sound" enable game sound through your headphone.

Unless you have bought the Dolby Atmos for Headphones app (and not only the free trial app), you should use Stereo or Windows Sonic to get game sound from your headphones.

If neither game sound nor chat sound is coming from the headset, try the headset on a different controller, or try different headphones on your controller (e.g. earplugs that came with your smartphone or something like that).