The answer to 'my sod installation looks bad' is that there could be several common causes, including poor soil preparation, improper installation, or lack of proper care after installation. Symptoms may include bare spots, uneven growth, or yellowing/browning of the grass.
In many cases, the solution may require re-sodding the affected areas or addressing the underlying issues through soil amendments, better watering, and ongoing maintenance. However, for more serious problems, it's best to consult a professional landscaper who can diagnose the issue and provide the appropriate remedies.