Perhaps you didn't DYOR well, there are factors one must consider before copying any trader, some of them are the traders ROI, AUM, winning rates, number of followers e.t.c, this are what gives you signals as to whether the trader is doing well. The exchange you use also play a great role actually, there are several exchanges that offer copy trading like Bitget, Bybit and MEXC but I use Bitget because it is the largest copy trading platform and has high liquidity for this features, they also have over 110k elite traders, the highest in the industry which gives users a wide variety of traders that align with their investment goals. It has actually been a smooth ride for me and perhaps you if you need any more insight that could help you, don't hesitate to ask.