Help create clip?

Since a few weeks I'm clipping good scenes in games like good kills in fortnite.
Before, everything was great, but since a few days, neither the sound of the game nor my voice or the voice of my teammates recorded, why can that be and how can I solve the problem. Help
By the way, use my graphics card driver GEForceExperience

What are you playing on?

If you play on PC, you can easily record your entire game with voice using the XBox app.

I'm pleased about the "most helpful answer" or a "thank you".