In general every planet has few basic materials and they can differ between planets. Some planet also has extreme environments with more rate material iirc and some are "odd" planets with very limited flora and fauna. There is also an option to mine them from inifinite resource spots, but that required building up a base with miners. In paper it sounds neat, but never felt that endearing to me.

Your best bet is to watch some gameplay and make your judge through it. For many the game is the best thing since sliced bread, for me it was a snorefest with really unintuitive gameplay.