any idea about my poor result

this is the rendering result of my scene
<img width="1906" height="988" alt="Image" src="https://github.com/user-attachments/assets/7e8cbb81-0a99-4c74-af90-21823dc758ec" />



and this is my raw training data

<img width="1280" height="720" alt="Image" src="https://github.com/user-attachments/assets/2bb296c3-6fba-42e7-9eab-6d0facee5234" />

can you tell me what's wrong with my result? thx!