1) Parchment paper prevents the bread from sticking to a different type of container while baking.
2) If you bake an exposed loaf of bread, then you need a wet hot oven, so find a way to keep steam in there. An oven proof pan with water it on on the bottom of the oven works.
https://www.kingarthurflour.com/blog/2017/02/28/steam-in-bread-baking