atmega328 + LCD 16x2 - nothing shows in void loop

When you post code on the forum, please make a habit of using the code tags "#" button.

click the MODIFY button in the upper right of the post window.
Highlight all you code.
click the "#" CODE TAGS button on the toolbar above just to the left of the QUOTE button.
click SAVE (at the bottom).

I think you need to learn how to use the lcd.SetCursor(0,0);