Instant Pot Turkey Breast and Gravy

Name: Instant Pot Turkey Breast and Gravy
Ingredients: 1 1/2 tablespoons unsalted butter at room temperature; 1 1/2 teaspoons kosher salt; 1/2 teaspoon freshly ground black pepper; 1 teaspoon paprika; 4 teaspoons combination chopped fresh sage, rosemary, oregano, or thyme , divided; 1 skin-on, bone-in whole or split turkey breast (4 1/2 pounds or smaller), thawed; 1 tablespoon olive oil; 2 medium yellow onions , cut into 1/4-inch slices; 4 cloves garlic , peeled; 2 cups low-sodium chicken broth; 2 tablespoons all-purpose flour