I quit, What really changed in these two coins,$GUN

GUNUSDT
Безсрочно
0.02848
-1.07%
and $ORCA

ORCAUSDT
Безсрочно
1.081
-7.52%
I have never seen that kind of volatility in my life.Within a micro second ,I can't trade.
Is $BTC

BTCUSDT
Безсрочно
67,751.3
-0.10%
dumping or is it manipulation which I have been trapped in.