Creating new Geodatabase, FeatureClass, Table and adding Fields using ArcGIS Pro .NET SDK

I need to create a new Geodatabase and creating FeatureClass, Table in the Geodatabase. After that adding fields in FeatureClass and Table are also needed.
I have created a new Geodatabase using this code:

  private async Task<bool> ExecuteAddFileGDB(string fileGdbPath, string fileGdbName)
  {
        try
        {
            return await ArcGIS.Desktop.Framework.Threading.Tasks.QueuedTask.Run(() =>
            {
                var fGdbPath = fileGdbPath;
                var fGdbName = fileGdbName;
                var fGdbVersion = "Current";  
                var parameters = Geoprocessing.MakeValueArray
                    (fGdbPath, fGdbName, fGdbVersion);
                var cts = new CancellationTokenSource();
                var results = Geoprocessing.ExecuteToolAsync("management.CreateFileGDB", parameters, null, cts.Token,
                    (eventName, o) =>
                    {
                        System.Diagnostics.Debug.WriteLine($@"GP event: {eventName}");
                    });
                return true;
            });
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.ToString());
            return false;
        }
   }

I have also code developed for creating FeatureClass, Table, and for adding Fields using Geoprocessing Tools.
As my ArcObjects experience, I think a geoprocessing operation is comparatively costly than an API call. So I am seeking a way to create a new geodatabase using ArcGIS Pro API instead of the Geoprocessing tool.
Like ArcObject API http://help.arcgis.com/en/sdk/10.0/arcobjects_net/conceptualhelp/index.html#//0001000004t8000000.

As well as for creating FeatureClass, Table, and for adding Fields.