The answer to 'my patio installation looks bad' is that there could be several common causes, including poor workmanship, improper materials, or uneven ground preparation. Symptoms may include cracked or uneven pavers, gaps between pavers, and an overall unsightly appearance.
To fix a poorly installed patio, you may need to remove and reinstall the pavers, re-level the ground, or replace damaged materials. The best solution depends on the extent of the issues. For minor problems, you may be able to DIY with some patience and elbow grease. But for more significant issues, it's generally best to call in a professional landscaping contractor to ensure the job is done right.