Xcode – Create table view section from a data model from a JSON file

I have parsed a JSON file and now I am trying to create a table view with a section. The section is a dictionary inside the data model.

import Foundation

struct ActionResult: Codable {
    let data: [ActionElement]
}

struct ActionElement: Codable {
    let actionID: Int
    let actionItem: String
    let actionGoal: ActionGoal
    let actionImage: String
    let actionBenefit: ActionBenefit
    let actionSavings: Int
    let actionType: ActionType
    let actionDescription, actionTips: String
    let actionInformationURL: String
    let actionSponsorURL: String

    enum CodingKeys: String, CodingKey {
        case actionID = "ActionID"
        case actionItem = "ActionItem"
        case actionGoal = "ActionGoal"
        case actionImage = "ActionImage"
        case actionBenefit = "ActionBenefit"
        case actionSavings = "ActionSavings"
        case actionType = "ActionType"
        case actionDescription = "ActionDescription"
        case actionTips = "ActionTips"
        case actionInformationURL = "ActionInformationURL"
        case actionSponsorURL = "ActionSponsorURL"
    }
}

enum ActionBenefit: String, Codable {
    case costs = "Costs"
    case education = "Education"
    case environment = "Environment"
    case health = "Health"
}

enum ActionGoal: String, Codable {
    case cleanEnergy = "Clean Energy"
    case cleanWater = "Clean Water"
    case climateAction = "Climate Action"
    case economicGrowth = "Economic Growth"
    case goodHealth = "Good Health"
    case noPoverty = "No Poverty"
    case promoteEquality = "Promote Equality"
    case qualityEducation = "Quality Education"
    case responsibleConsumption = "Responsible Consumption"
    case zeroHunger = "Zero Hunger"
}

enum ActionType: String, Codable {
    case sticky = "Sticky"
    case todoe = "Todoe"
}

typealias Action = [ActionElement]

Now I am trying to create my table view section but I am getting the following error: Value of type ‘[ActionElement]’ has no member ‘actionGoal’

Two questions: How do I fix this? What is a good resource to understand more about data models and table views?

This is the code I am writing:

    var result: ActionResult?
    var index = 0
    
       
    override func viewDidLoad() {
        super.viewDidLoad()
        parseJSON()
        
        
    }
    
    // Table View Sections
    
    
    override func numberOfSections(in tableView: UITableView) -> Int {
            return result?.data.count ?? 0
            
          }

        override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
            return result?.data.actionGoal
       }