Okay, kiddo, so imagine you are playing a game with your friends, and you are having lots of fun. But then, you start to notice that some of the characters in the game are always boys, and the girls are always just there as helpers or prizes for the boys to win.
Now, this might not seem like a big deal to you, but it's not fair that girls and women are always shown as weaker or less important than boys and men. This is called sexism, and it happens in video games too.
Sometimes, video games can even make fun of girls or show them in a way that's not respectful. This is not okay, and it can make girls and women feel like they don't belong in the gaming world.
It's important for game makers to show all kinds of characters, no matter their gender, and to show them all as strong and important. That way, everyone can enjoy playing games and not feel left out or disrespected.