Bitcoin is unstable but as you can see, the prices always go up no matter how many times it has been dropped.
No. There is no guarantee for that. For example, the exchange rates touched a peak of $1,230+ in 2013 December. Almost four years have passed, and we are yet to witness exchange rates at those levels (although now it is getting quite close). Have you imagined the situation of those who purchased Bitcoins back in 2013, for $1,230 per coin?
Well i think it will not be the same as 2013 happen that the price hit the price and crash that i think for now its impossible to happen because we are already growing and more people are holding large amount of bitcoin and many people also are using bitcoin they can manipulate the price of bitcoin since we are growing the price gradually increasing..