2. Make your own sauce. The ingredients are cheap, and a little experimentation will get it to the taste that you want.
3. Don't overtop it. The natural tendency is to want more - more sauce, more cheese, more whatever else. Start off very simply. Scatter little bits.
4. Transfer as much heat as possible to the bottom of your crust. You can use a baking steel, a pizza stone, or unglazed fire tiles available for less than $10 at your local hardware store. Put them in the oven exactly where you want your pizza to go, then fire it all the way up.
5. Experiment. The first few pizzas you make will vary wildly from "almost what I want" to "maybe I shouldn't make pizza". Keep going. Take notes.
And if you don't have an oven at all, consider getting a cast iron frying pan and try for a completely different kind of pizza: http://www.seriouseats.com/2016/08/cast-iron-pizza-tortilla-...