you also forgot to add that the initial COST of gold entering a market, is based on fuel costs of mining equipment(excavators, trucks, sluice machines). and with fuel prices dropping means its cheaper to mine so miners can sell gold cheaper and still profit, which is another sign that gold prices can drop as new gold hits the market

as for what to invest in next,
the obvious answer is things that have already had their dip/crash/dump

for instance, in america nuclear power industry crashed due to the 'renewable' era. but now america and other countries are now becoming interested in nuclear generated power again due to its constant availability rather than renewables that fluctuate based on daylight or weather

..
in regards to crypto
crypto that has a underlying cost(mining) which ensures the market speculative PRICE also has a underlying VALUE that is non zero.
some crypto that are "minted" instead with no underlying cost value, has a zero bottom and can just drop to nothing

so buying into crypto that has a good sustaining mining cost with a prospect of popularity or existing popularity that strengthens and hardens the mining difficulty as time goes by, will have a rising underlying value/cost which then raises the speculative market price that sits above the value/cost