You just invested so much on the wrong period since you lost the chance to invest when they crashed. All you can do now is hodl since those coins are still up there and have so much potential on them. You can still have a huge amount of profit at the right time.
Yes, The problem here is his choice. If the coin is competing for the value of the use or utility or loses its popularity in the market. In addition, many external influences affect its value. Hold and maintain can increase the damage or can not return to the equilibrium value. A coin for sustainable growth and strong growth must create a trend and value for use in the world community.