You can teach risk management, but you can't teach balls. It's definitely going to be harder to grow your investments in this space. My personal advice would be to hold. I don't know where you got in or out, but eventually, you will learn from your mistakes and you will have that much more knowledge in the next run. I hope this helps
I would advise to hold the coins you invested in. But in troubled times on the market you can sell coins. When the situation becomes more understandable, you can invest again. Risk management is not only profit, but also an opportunity to save your trading account.
Unless you are day-trading, I wouldn't advise selling at a loss. Just hold and wait it out. The technology is extremely disruptive, and as long as you are investing in coins that have REAL value and not some random shitcoin, it's price is bound to recover.