Flavorful Tater Tot Casserole

Name: Flavorful Tater Tot Casserole
Ingredients: cooking spray; 1 (16 ounce) package pork sausage (such as Owens® Original); 1 small onion, chopped; 1.5 teaspoons minced garlic; 1 (10 ounce) can diced tomatoes with green chile peppers (such as RO*TEL®); 1 (12 ounce) package frozen chopped broccoli, thawed; 2 cups shredded Mexican cheese blend; 1 (10.75 ounce) can cream of celery soup; 1 (32 ounce) package frozen bite-size potato nuggets (such as Tater Tots®); 1 pinch ground black and red pepper blend (such as McCormick® Hot Shot®), or to taste