How to introduce random material offset and rotation to array modifier created objects in 2.81? I have generated tiled wall using 2 times array modifier(width and height),

I want to introduce some randomness to materials so the tiles don't look like cut from single large piece.
I tried adding random rotation like below but the rotation is the same for each duplicated object.

What can I do to make it random on each instance independently
This is video what helped me. The Array modifier creates a copy of an object, which behaves exactly as its origin. So you should also see this answer.
Apply the modifier to make the data real.
Enter Edit Mode on the object and press P  &gt; Separate by loose parts.
Select all separated objects and press Shift + Ctrl + Alt + C  &gt; Origin to Geometry.
This will make each piece an individual object with the origin located at the origin of the original object. Now you can manipulate them as you wish.