If an economic crisis really occurs, to secure value, the best way is to turn to gold investment. Given the huge risk of inflation and the collapse of the value of shares and property. Cryptocurrency may be another alternative, but the risk is very large if the impact of the crisis impacts crypto.
If there is a global financial crisis yet again people will look for stable financial assets rather than volatile assets and i find it difficult to see people trusting bitcoin during those crisis but what everyone should understand is that bitcoin is the only asset that cannot be manipulated or destroyed by any bad government policies and hence you can trust bitcoin for the long term.