Homemade pizza sauce should be fairly basic and straightforward, so that it does not overwhelm the pizza toppings. Try this recipe which will make enough sauce for two, twelve inch pizzas.
1 14oz can of chopped tomatoes in tomato juice
A good pinch of dried basil leaves
2 grated garlic cloves
Salt and pepper
Add them all to a small saucepan and bring to a simmer. Cook on a very low heat for about twenty minutes, stirring frequently. Cover and allow to cool before using as sauce on your pizza. (Can be strained through a sieve or blitzed in a blender if you want it extra smooth.)