Yes!i think that those down ward trend is a thing of the past because most of the factors that lead to price fall will pave way for bitcoin and altcoin to rise. Fake news carriers plus haters of bitcoin will definitely fed up spreeding fake news when bitcoin begin to pump up on a great demand,that is ,based on the awareness about Bitcoin, its popularity, trust among crypto community members, and even more. If the demand is high and the supply does not meet the demand, this causes a spike in the Bitcoin rate. With Bitcoins being a finite amount that will never cross 21 million, the supply is very controlled. Thus it is expected that the price will keep on increasing.
I believe Bitcoin  will once again hit 20000$ if we are patience to hold our investment and even most altcoin will also rise to new prices.