Fully Loaded Burger Bowl with "Special Sauce"

Name: Fully Loaded Burger Bowl with "Special Sauce"
Prep time: 20 min
Cook time: 15 min
Total time: 35 min
Cuisine: American
Ingredients: 1 pound lean ground beef; 4 teaspoons garlic powder; ½ teaspoon salt (more or less to taste); 1 teaspoon avocado oil (or melted refined coconut oil); ½ cup mayonnaise (see Notes); 2 tablespoons ketchup (see Notes); 2 teaspoons pure maple syrup (or 1 tablespoon coconut aminos if on Whole30, see Notes); 1 tablespoon dill pickle relish; 2 teaspoons dried minced onion; 1 pinch crushed red pepper flakes (more or less to taste); 1 pinch salt (more or less to taste); 2 medium avocados (pit removed, peeled); ½ tablespoon fresh lemon juice (juice from approximately half of 1 lemon); 1 cup thinly sliced red onion; 2 small heads romaine lettuce (leaves only, roughly chopped; approximately 8-9 cups total); 1 ½ cups cherry tomatoes (halved; or grape tomatoes, halved); ½ cup pickle chips (plus more to taste); 8-10 slices thick-cut bacon (cooked, crumbled)