Imagine buying a slice of your favorite pizza and every time the shop makes money, you get paid. That is basically the stock market.
People often say the stock market is risky, but no one explains what it actually is. So here is the simplest explanation.
Imagine your friend wants to open a coffee shop, but he needs ten thousand dollars. So he asks ten people to give one thousand dollars each, and in return, he gives them ownership.
Now the coffee shop becomes popular and starts making profit.