Easy Seafood Stew for Beginners

🦞 Seafood mix * 1/2 lb shrimp (peeled, deveined) * 1/2 lb crawfish tails * 1/2 lb lump crab meat * 1/2 lb lobster meat (claw + tail) * 1/2 lb crab knuckle meat (adds sweetness + texture) * 1 pint oysters (with liquor reserved) ⸻ 🥔 Base ingredients * 3–4 medium potatoes, diced * 1