The cartoon kids could be sad and need help because their pet is sick or they didn't get the expected gift. Such events might trouble them and make them look for assistance.
Could be that they failed in a game or were criticized by their parents. There are many possible reasons that can make cartoon kids sad.
Maybe they had a bad surfing experience, like falling off a lot or not catching any good waves.
Maybe they lost a game or a favorite toy. That could easily make them sad.
Sad face cartoon kids often have downturned mouths, big teary eyes, and a slumped posture. They might look dejected or lonely.
Maybe they had a bad day at school or lost something important to them.
Perhaps the sad kid is feeling left out or is worried about something. Kids' emotions can change quickly for many different little things.
Maybe it's to make us feel more sympathy for them. It catches our attention and makes us think about their situation.
Well, she might be sad because she's alone and misses her family. Or perhaps she saw something bad happen to someone else and it made her feel down.
Maybe he's sad because the kids aren't playing with him or because they don't understand him.
Maybe she lost something important to her. That could make her sad.