A steel is better. A stone is what most kitchens start with. Lodge’s ceramic stone is widely reviewed, preheats in a home oven, and will teach you to launch before you spend on quarter-inch plate.
Do not thermal-shock it. Preheat with the oven. It is the budget rung, honestly labelled.
Buying guide: Baking steel vs pizza stone, Why pizza is soggy (and how to fix it), How to clean a pizza stone, steel, and pizza oven