Let’s talk about isolated and cross margin.
In cross margin mode, the entire balance of the corresponding currency in your account backs your cross-margin positions, so losses can use up your entire account balance.
Honestly, this is something I only learned later: before opening a position, check the current margin mode so you don’t discover it’s cross margin only after something goes wrong.
Quick glance: $BTC current price 82821.79 (24h -0.28%).
Be extra cautious when you hear claims of high returns.

When markets are volatile, manage your risk first.