It could be that the stakes are incredibly high and he's frustrated at not being able to solve the problem quickly. Or perhaps he's dealing with personal issues that are spilling over into his crime-fighting, making him angry in the comic.
It could be because of a villain's actions or a personal setback. Maybe something happened that challenged his beliefs or goals.
Batman might be angry and punch Superman because of a threat to Gotham or a perceived betrayal. Maybe Superman was under some kind of mind control or influence that made him act wrongly in Batman's eyes.
They usually have a darker tone, with Batman showing intense emotions and facing challenging situations that push him to the limit.
One common theme could be Batman's struggle with inner anger. For example, he might be angry at the criminals who keep escaping justice. Another theme could be his anger towards the corruption in Gotham that he's constantly fighting against. And sometimes, his anger might be directed at his own limitations, like when he fails to save someone.
Batman's allies such as Commissioner Gordon could be involved. Sometimes Batman might be angry at Gordon if he feels that the police force is not doing enough to support his fight against crime. Also, other members of the Bat - family like Batgirl could be part of the story. Their actions or decisions might trigger Batman's anger. For instance, if Batgirl decides to take on a powerful villain alone against Batman's advice.
Well, Superman might be angry in the comic because his powers weren't enough to stop a huge threat. Or perhaps there was a betrayal by someone he trusted. It could also be that the world just wasn't living up to his ideals of justice and peace.
Maybe he's facing a big threat or injustice that makes him furious.
Maybe he's angry because the villains are causing too much trouble.
It could be that someone criticized his work harshly, making him angry. Or perhaps he had a fight with a friend or family member.
Maybe he's angry because a villain got the better of him or something happened to a loved one.