Is there any techniques or tricks to predict the future price
TA and FA, that's the answer for your question. basically those experts are using TA and FA to predict the price movement of the cryptocurrency. this has been discussed in so many times about the possibility to predict the future price of bitcoin and altcoin. remember that's only speculation and anything can be happened with the crypto before.
Honestly there is no way to predict on what the exactly price of bitcoin and altcoins in the next few months or years. Prediction is always an prediction, we cannot guarantee that it would happen in the future. The better we can do is wait, believe and see what will happen.