To be honest, it depends on the current situation. In the event that a certain fiat currency is to go down, then yeah Bitcoin would be a safe place to invest your money in. But when this kind of event where food, medicine, and necessary supplies are more important then money, then fiat money would be your best bet. The decline of Bitcoin might be because of the current event where supplies and medicine are more important so it is pretty logical that everything is going down this month.
When saything price crash, people are still unconsiously using fiat money as a standard to measure value, this is the major reason that bitcoin can not become a safe-haven asset
Now some people even say that the machine that makes surgical masks has become the money printing machine, means that medical supplies has become the safe-haven asset, but they still use fiat money to measure value
So I think the key is to let people to use bitcoin to measure value, that will make quite big difference, otherwise, always a slave of fiat currency