✅ Working With Json

public static bool CreateJsonFile()
{
    Dictionary<string, bool> newDict = new Dictionary<string, bool>();
    newDict.Add("agree", false);

    var jsonData = JsonSerializer.Serialize(newDict);

    try
    {
        File.WriteAllText(_jsonFile, jsonData);
        return true;
    }
    catch (Exception ex)
    {
        ColorPrint.WriteLine(ex.Message, ConsoleColor.Red);
        return false;
    }
}

{"agree": false}

{
  "agree": false,
  "username": "",
  "password": ""
}