If you have a comment on why this was happening, let us know by posting your thought. This is why one must branch out into other asset classes like forex or commodities. These are all bullet proof against economic conditions like recession which is now coming.
Why do you think I am doing a live Forex Oanda API workshop? You can join here if interested
https://quantlabs.net/blog/2019/07/why-did-all-the-major-cryptocurrency-coins-like-btc-eth-suddenly-fall-forex/