the sample code

    cameras = await availableCameras();
    final frontCamera = cameras!.firstWhere(
          (camera) => camera.lensDirection == CameraLensDirection.front,
      orElse: () => cameras!.first, // Fallback
    );

_controller = CameraController(
  frontCamera,
  ResolutionPreset.medium, // Try medium resolution first
);

for preview sample code

return AspectRatio(
       aspectRatio: _controller!.value.aspectRatio, // Keep correct ratio
                child: CameraPreview(_controller!),
    );

result:result even does not seems logical its something keeps fluctuating no actual data shows over here even if the camera is covered the result is same

screenshot

Android 14,pixel 7 pro api 34 | android studio | ndk v28