You’ll need something that can take that digital audio output and convert it to analog so your mixer can handle it.

Something like this: https://www.amazon.com/Digital-Optical-Analog-Converter-Adapter/dp/B07B9JR1N7/ref=mp_s_a_1_3?keywords=Digital+Coaxial+Input+Stereo&qid=1682566129&sr=8-3

The digital/optical output from your TV will connect to the input side of the little box. The output side of the little box will connect to your mixer. It looks like the box also uses DC voltage over USB for power.

If you wanna get fancy you could also use a stereo DI box inline between the converter and the mixer. This will give you what’s called ‘balanced audio’ and will result in a cleaner sound.