iron generation is too low

the generation of iron is very low, the generation of copper has surpassed the generation of iron and that means that one cannot progress well in the game. Iron is very scarce and I can verify that in 2 hours of play I have obtained more than 2 copper stacks and only 9 iron ingots, which is absurd because in the early game copper is not of much use. I would appreciate if you could fix this.