Of course, this is not the end of the crypto market. If you have lost money, this doesn't mean that the crypto market has come to an end. Yes, you mismanaged your assets, which is why you are now in this situation. It is thanks to such traders like you, the other part of traders (experienced and successful traders) earn.
It is sad that this happens. After all, in fact, your success depended only on you. Yes, the market situation in 2018 was bad and it was necessary to strain in order not to fall into the trap, but to continue earning. It was difficult for me to make money in 2018, but I was constantly learning what could help me to do this, I was looking for ways to earn money on crypto, not just trade.
In general, don't despair, it is better to spend your strength and energy to learn what will help you earn in the future.