you cannot really predict the best store of value , since if you are holding just one asset it is always a risk of it going down
I suggest you create your usual basket of 4-5 currencies and 2-3 assets and share your investment equally between them all
and why not gold or property? some property is making huge ROI , 100-200% in five years is not something unusual
you can always hodl bitcoin , for example or create the said currency basket out of the cryptocurrencies of your choice
while way riskier than fiat/assets , it can also gain you way more
bitcoin has made 9000000% return since the start , nothing can beat that