Q: How do I get gold and aluminum?
A: You gotta look around and expand to these resources. A good method to do that is called RMD bridging, where you expand your borders by building Raw Materials Deopots to where you need to harvest at.
Q: I can't find any uranium!
A: There are no uranium deposits, you have to make use of the Uranium Synthesis Lab.
The Spice must flow.