I've been searching underground but I just can't find anything, where is that?
Find a cave or something and mostly quite far below ground
Under the earth. You have probably not searched well enough. It takes something, you can find it. Be patient
Look in creative mode, then you know where which is.
Enter a single player world
When you're in the game, press "T" or the key to open the chat and enter / gamemode 1. Now you can just go down and look for iron, or even better, look for a cave.
Are 5 things you can do 1)
Reinstall minecraft
2) inquire at mojang
3) shoes in the creative (copied world)
4) create a new world and search for it
5) give you iron with orders
*additive*
Z1) Make an iron golem farm by finding a village
Z2) kill a lot of zombies
(drop rate is 10%)
It is a mistake, you have to restart your computer, then the error should be fixed!
