Some of them yes some not, just when i though i can make little profit yesterday the price of coin im holding go down rapidly

choose wisely mate that all i can say
That's right. It may look good for some, but it also looks a little bleak for a few. Altcoins would always be a player in the market, and its movements would be like this every time. Compared to Bitcoin, altcoins are usually affected quite heavily when market movements come into play, and it's also affected by the value of Bitcoin. Usually, when it goes down, altcoins go up, and when it goes up, most altcoins will be at bay and won't go up in value. The interplay of Bitcoin and altcoins is an integral part of the market that keeps it active and continuously changing.