Why are there still people losing money even with a 100% win

Why are there still people losing money even with a 100% win rate, they follow once and then stopMy bad data #带单挑战1000U翻10倍  

My Futures Portfolio

0 / 200

Minimum 10USDT

Copy trader have earned in last 7 days

-300.58

USDT

7D ROI

-43.08%

AUM

$544.16

Win Rate

75.00%

Copy trading is high risk. Be careful and see Risk Warning.

Disclaimer: Includes third-party opinions. No financial advice. May include sponsored content. See T&Cs.

DOGE

0.16947

-0.76%

ETH

2,520.74

-0.04%

BNB

644.87

+0.01%

Why are there still people losing money even with a 100% win rate, they follow once and then stop