Why does my lawn look terrible and what can I do to improve its appearance?

Your lawn may look terrible due to factors such as lack of water, poor soil quality, inadequate sunlight, or pest infestations. To improve its appearance, you can try watering it regularly, aerating the soil, fertilizing, mowing at the correct height, and addressing any pest issues. Consulting with a professional landscaper can also help identify specific issues and provide tailored solutions.