Good New Orleans Creole Gumbo

Name: Good New Orleans Creole Gumbo
Ingredients: 1 cup all-purpose flour; 0.75 cup bacon drippings; 1 cup coarsely chopped celery; 1 large onion, coarsely chopped; 1 large green bell pepper, coarsely chopped; 2 cloves garlic, minced; 1 pound andouille sausage, sliced; 3 quarts water; 6 cubes beef bouillon; 1 tablespoon white sugar; salt to taste; 2 tablespoons hot pepper sauce (such as Tabasco®), or to taste; 0.5 teaspoon Cajun seasoning blend (such as Tony Chachere's®), or to taste; 4 bay leaves; 0.5 teaspoon dried thyme leaves; 1 (14.5 ounce) can stewed tomatoes; 1 (6 ounce) can tomato sauce; 4 teaspoons file powder, divided; 2 tablespoons bacon drippings; 2 (10 ounce) packages frozen cut okra, thawed; 2 tablespoons distilled white vinegar; 1 pound lump crabmeat; 3 pounds uncooked medium shrimp, peeled and deveined; 2 tablespoons Worcestershire sauce