The answer to 'my lawn looks bad' is that there are several common causes, including improper mowing, lack of water, pests, and disease. The symptoms can include bare patches, discoloration, and uneven growth. To address the problem, you'll need to identify the underlying cause and take the appropriate steps.
If the issue is due to improper mowing, adjusting your mowing height and frequency can help. Lack of water can be remedied by adjusting your irrigation schedule. Pests and disease may require the use of targeted treatments, which could involve DIY approaches or calling in a professional landscaper, depending on the severity of the problem.