...I only recommend Bitcoin as the most safe coin ever because of it decentralization and other factors that make it suitable for investment. If we have large holding of Bitcoin I'm our portfolio, I don't think we can fall into this kind of consistent crash of most crypto projects.
In this case, you need to focus on the proper storage of your coins. Otherwise, we may lose our bitcoins if we improperly ensure their security. It must be remembered that if you do not have access to a private key, then this is not your cryptocurrency. And in this case, the most reliable will be the bitcoin hold on a cold wallet.