Cooking shrimp with this easy recipe will make them delicious!

What ingredients do I need for this recipe?
Raw shrimp, 600 g.
An onion.
3 garlic cloves.
Raw crushed tomato, 500 g.
White wine, 150 ml.
Dried oregano.
Cayenne or chilli flakes.
Fresh parsley.
Salt, pepper and olive oil.