Vegan Tofu Scramble Breakfast Sandwiches

Name: Vegan Tofu Scramble Breakfast Sandwiches
Ingredients: 2 tablespoons vegetable oil; 1 (12 ounce) package firm tofu, drained; 0.75 cup canned fire-roasted tomatoes, drained; 1 medium red bell pepper, diced; 0.5 medium yellow onion, diced; 2 cloves garlic, minced; 1.5 tablespoons nutritional yeast; 1.5 tablespoons soy sauce; 0.5 teaspoon red pepper flakes; 0.5 teaspoon paprika; 0.25 teaspoon ground turmeric; 1 pinch salt to taste; 1 tablespoon vegan mayonnaise, or to taste; 5 sandwich buns, split; 1 cup fresh spinach; 1 avocado, sliced