In my prediction i think every price altcoin is still down because fail and scam project.A good project lock their token to save a fall price. But its not give effect to make their price is up because too little buyer in market.
Will the altcoin raise again in middle 2019 ?
Well if we always think that there's no hope that the market will be move up It will really nothing happen. As we can even the market is bearish still people use it. So as long people continue to invest and buying in crypto there's still hope that bull run will be happen really soon.