Please check out the article in case I missed anything. Assuming you need to keep your account for work, here are the direct links for each step (or instructions where a direct link is not possible):

  1. Go to this page and turn it off: www.linkedin.com/…/data-for-ai-improvement
  2. Submit this form: www.linkedin.com/help/linkedin/ask/TS-DPRO

In addition: