How I don’t understand 3rd place player go through to knock out stage in World Cup 2026?

It's a new rule. They're tryna give more nations the chance to qualify. It's probably because there's 48 teams as opposed to the usual 32

Watch Portugal win that world cup 🤣🤣🤣🤣 DONT ask me how I know this... But if it happens I'ma be like 🙌🙌🙌🤣🤣🤣 Not that I am watching the World Cup or even a fan...