This does not work everytime but I use arbitrage strategy for now since I saw many altcoins that opens opportunity on this ! the profit is not that high but it was worth the time
It is good to manage in the small package and then invest because investing your whole is just the stupidity because as you are not yet very good in the trading and the investing so you should wait till the price of the bitcoin will be low again just then invest the whole but till then just try to invest the small and just try to manage the investing I hope it will give you the profit someday and it will be the great day.