N64 controller setup help

I have my USB n64 controller almost setup, but I’m stuck at one part. When I move the joystick or the dpad up or down, my person (when playing perfect dark) moves forwards/backwards but also looks up/down at the same time. When I look at the core input settings, I don’t have an option to map the C buttons to the right analog buttons.

When I’m in the retroarch input settings, I have them mapped correctly.