Cryptocurrency will constantly improve and will not go anywhere and will stay with us forever, so you should not even think about that cryptocurrency will ever disappear. With trading now, of course, many have problems due to the fact that the cryptocurrency market has become too unstable this year.
Crypto currency is too general, and the fact is only good crypto currencies will exist over time, over crashes of market from years to years. Bad crypto currencies will die, even without crashes because when their developers scam enough money, they will exit, and abandon their projects.