In a large heavy-bottomed pot, heat the avocado oil over medium heat and whisk in the cassava flour continuously for 5-7 minutes until it develops a deep golden brown color.
Stir in the diced onion, green bell pepper, and celery, sautéing for 5 minutes until the vegetables are softened and aromatic.
Gradually pour in the chicken bone broth while whisking constantly to ensure the roux incorporates smoothly without forming lumps.
Add the sliced chicken andouille sausage, okra, creole seasoning, dried thyme, garlic powder, sea salt, and black pepper to the pot.
Bring the mixture to a gentle boil, then reduce the heat to low and simmer uncovered for 15 minutes to allow the flavors to meld and the okra to naturally thicken the stew.
Fold in the raw shrimp and hot sauce, cooking for an additional 3-4 minutes until the shrimp are pink, curled, and just opaque.
Adjust the seasoning if necessary and serve the gumbo hot in shallow bowls for a hearty, clean-eating meal.