I was not saying to remove the “For each” action. I was saying to remove the loop from your liquid in the Sheets action.
At this point, just use this template to get started: https://shopify.com/admin/apps/flow/editor/templates/9002b26c-b2fa-4d9b-adb5-5e9db9c6beb9. Then add your data to fill out the row.