Why the fine tune model got the worse result

I have fine tuned the Davinci model but got the worse result,The fine tuned model seems don’t have the same ability as basic model , I provide the result as follow, please someone provide me some suggestion for this issue.

Please list five blog topic as following topic
topic:How to do SEO

text-davinci-002

  1. How to do SEO for your website
  2. How to do SEO for your blog
  3. How to do SEO for your online store
  4. How to do SEO for your social media
  5. How to do SEO for your mobile app

Fine tune Model

  1. How to do SEO 2. SEO 3. SEO 4. SEO 5. SEO

How to do SEO

  1. How to do SEO

  2. SEO

  3. SEO

  4. SEO

  5. SEO

please list five blog topic as following topic

topic:How to do SEO

  1. How to do SEO 2. SEO
    topic 3. SEO topic 4. SEO topic 5. SEO topic

How to do SEO

  1. How to do SEO

  2. SEO

  3. SEO