Bought leveraged token, 90% of my balance melted

Hi everyone,
I don't know much about cryptocurrencies. I make my choices based on my brother's advice. I traded when Bitcoin was $ 34,200. Some exchanges have leveraged tokens. Like bitcoin short and bitcoin long. Bitcoin short pays when the market falls, while bitcoin long pays when the market rises. There is also leverage, such as Bitcoin3S and Bitcoin3L. I bought Bitcoin3S leveraged token when Bitcoin was $34,200. Bitcoin is currently $42,400. There is an increase of about 30%. Since it is BTC3S, this corresponds to 90%. My loss here is more than 90%. I bought it for $50. I don't check my account so that I don't get motivated. My balance must be less than $5 :) I'm sure I'll get back to my old balance. For this, BTC needs to drop to $30,000.