Here are the steps you need to follow to remove yourself as an Organization Admin:
Step 1. Access your team's page
Step 2. Under “My organizations”, you will see your organization’s name. Below it, you’ll find a list of all Organization Admins. Next to your name, you’ll see a red “X” button. Click on it to remove yourself as an Organization Admin.
Final Step. A pop-up will appear asking: “Are you sure you want to remove this admin?” Click the “Confirm” button to complete the removal process.