Photographs can be adjusted with Photoshop, but to save time and hide my ignorance I override the automatic exposure in two ways.
For white balance I select “Flash”,”Incandescent”,”Fluorescent”,”Cloudy”, or”Daylight”. This gives better colour values.
For subjects on a white background I add +1.7 OEV to increase the exposure determined by the camera. This gives less of a blue tint to the background.
Below the result to cheer you up. Sony Cybershot, fluorescent lighting, macro setting.