Sometimes I play the game and the units move but without movements. they dont even attack normal. They just sit there and lose energy bars. WTF?

It happens, it is normal.

Ok. ( god im stupid)

Check your preferences and make sure you have Animate Battles turned on. This will make them fight during battles. Also check the boxes for "Animate Our Moves", "Show Enemy Moves", etc. and turn those on if you want to see the units walk to the next square when you tell them to move there.

Ive tried that. its just a glitch i think.