You didn't lose 1500 USD for trading, market is dumped that time. If you do now you can earn profit. Trading is secure way to earn profit, if you look deeply.
if the OP bought some coins with $3000 , and the value from his coins now about $1500
thats mean he already lost about $1500 right ?, thats mean he already lose his money my friend
and trading is risky for the people who don't know how to trade