I invested $85 into ethereum yesterday and after couple hours I lost $10 ,,,does it mean it's not the best time to invest yet and secondly I'll like to ask if that amount is good enough to invest in such a stable coin
The amount is very small to invest in the ETH. Choose something cheaper, then learn how to trade first, since such coins are not suitable for a long time, and secondly you will find the perfect coin for yourself.