Don't panic, you're not the noly one that lose a lose of money. I almost lost 90% of all my fund that i investing in crypto.If you have the belief in the future of cryptocurrency, then keep holding it. Otherwise, just waiting and choosing a better price than now to sell it.
Everybody here is in the same situation. That is why it is so important now not to sell the cryptocurrencies we have but hold them. I believe that soon, we will see how the bull run starts and get the profits.