Swift JSON parsing returns empty array

Question

I am trying to parse a JSON object from an API, I have defined the structure of JSON in a separate file.

The parser successfully parses the JSON file, however when calling the getStandings() function in viewDidLoad() it returns an empty array. Can anyone tell me where's my error?

This is the structure of the JSON

EDIT: I went through the similar question however none of the solutions are working on my code, can someone please explain what needs to be added to my code, I am new to this

struct FootballData : Codable{
    let response: [Response]
}

struct Response: Codable {
    let league: League
}

struct League: Codable {
    let id: Int
    let name: String
    let country: String
    let standings : [[Standings]]
}

struct Standings: Codable {
    let rank: Int
    let team: Team
    let points: Int
    let goalsDiff: Int
    let all: All
}

struct Team: Codable {
    let id: Int
    let name: String
    let logo: String
}

struct All: Codable {
    let played: Int
    let win: Int
    let draw: Int
    let lose: Int
}

Here's the code I am using to request data from the API and parse the JSON file.

    func getStandings() -> [[Standings]]{
        let standings = [[Standings]]()
        var request = URLRequest(url: URL(string: "https://v3.football.api-sports.io/standings?league=39&season=2022")!,timeoutInterval: Double.infinity)
        request.addValue("639248abcf96cbcebd90cd66aec49db4", forHTTPHeaderField: "x-rapidapi-key")
        request.addValue("v3.football.api-sports.io", forHTTPHeaderField: "x-rapidapi-host")
        request.httpMethod = "GET"
        
        let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
            if error == nil && data != nil {
                let decoder = JSONDecoder()
                do {
                    let decodedData = try decoder.decode(FootballData.self, from: data!)
                    let standings = decodedData.response[0].league.standings
                    print(standings)
                } catch {
                    print(error)
                }
            }
        }
        //4. Start the task
        task.resume()
        return standings
    }