It's obvious how money is made when the price goes up, you buy cheap, sell when the price goes up, and the difference is your profit.
Short selling also works in a similar manner, the difference is that you borrow a coin, sell it immediately, wait for the price to go down, buy back what you borrowed, and giving it back. The difference is your profit.
Example:
Sell it immediately for $105,000
You buy back 1 $BTC when price goes down to $100,000 and return it to Binance
In this case, you sold it for $105,000 and bought it back at $100,000, which means you make a profit of $5,000
