Yes crypto currency is unpredictable. But we must take care of the future. You need to look for reliable objects for investment in order to secure a rich future
What is that reliable object that can secure your future to be rich? I dont think that there is any coin that is really reliable except bitcoin, the only coin that all of us really needed is bitcoin because every coin is based on bitcoin so if you can control bitcoin I think you will easily control other coin too
That is why better to invest on bitcoin rather than other cryto and there is no precise time thst you should invest it, as long as you put huge amount of bankroll to reliable site, I am sure you will earn some profit for sure