Dont Understand Populate

I have the below API request and it just returns the below response, Carousel is a component, how do I make it return all the fields of the component?

  'http://localhost:1337/api/home?populate=*' \
  -H 'accept: application/json' \
  -H 'Authorization: Bearer xxx
{
  "data": {
    "id": 3,
    "documentId": "nak3xsaofnrxedhv77p0tvgd",
    "createdAt": "2024-09-26T19:05:22.056Z",
    "updatedAt": "2024-09-26T19:38:07.696Z",
    "publishedAt": "2024-09-26T19:38:07.705Z",
    "locale": null,
    "Test": "Hey!",
    "Carousel": {
      "id": 8
    }
  },
  "meta": {}
}

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You need a populate query in the lines of ?populate[Carousel][populate]=*