If he really went to the battlefield (?) that would be a stupid and dangerous show. He would be putting his men into danger just to satisfy his own narcissism. Obviously he is not a trained soldier, so there must be someone around him to make sure he is safe at all times, and he becomes a target.
A leader is one who carries on his job and does whatever possible to ensure that his people are safe. The job of a president is not to play soldier.
So far ukraine has mostly shown video games footage.
My uneducated interpretation is that they have nothing better, and that the russians are actually very careful not to make any civilian casualty, also to avoid future internal and international issues. Possibly one of the reason they are slower than expected.