I have a small amount of ethereum, I've noticed since january 2018, the price of the ethereum is at $1000, but now it already lost 50% from its recent price. Is this case normal for ethereum coin? Or it is the end of ethereum. (Sorry my intention was not to create FUD, I'm just curious and new to cryptoworld).
You should look at the price chart of the ETH for the year and understand that even after a 50% drop in this interval, its growth is huge. Now there is a correction associated with the general negative in the market, but when the correction ends the ETH will quickly update its highs.