A CFD is a contract that follows the price of an asset, such as a currency pair, a metal, an index, an energy or a crypto asset. You do not own the underlying asset.
If the price moves the way you expected, you gain. If it moves the other way, you lose.
Leverage lets you open a larger position than your deposit alone would allow. It increases both gains and losses.
CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.