the best thing when you are starting is to buy on spot if it drops you wait for it to rise and you do not lose your capital to buy in the future you must analyze your risk management very well good luck

I’m new to trading, and I don’t understand what happened. I had $3900 and purchased BTC at an average price of 90,000, selling it at 91,300. I also bought ETH at around 3,000 and sold it at 3,120 using a stop-loss method. Despite this, I am down by more than $300. Where did I make a mistake, and what caused me to lose my money? My portfolio was divided into 70% ETH and 30% BTC.