Coal ores are common above sea level, generating the most at Y level 96. They can easily be found on a stony hill or mountain. Copper ore usually generate beside granite blocks (Image via Mojang) ...
Copper is one of the most common ores in Minecraft. It was added back in 2021 with the Caves and Cliffs update part 1. At first, it was only craftable into copper ingots, copper blocks, lightning rods ...