Global stock indices like VT are not risky.
Long term you are right, short term it depends on your timing. If you had bought VT at the beginning of 2022, you'd be about 20% in minus one year later.
Keeping your money in cash which inflates or into cryptos which will get destroyed by CCP quantum computers within 5 years is risky.
Cash is only good for short term liquidity.
If the CCP gets their quantum computers to work properly, all passwords and access codes will become obsolete, also the one you use to login to your broker account, and all military ones, breaking BTC will be the last of your worries then. There are yotabytes of encrypted data being collected by them and the NSA and kept in data-centers for future decryption when the tech arrives.
Crypto can and will be upgraded to become resistant to quantum tech (if it really arrives, we had like 40 years of this scare crow now).
Anyway, your suggested time frame of 5 years allows one more bullrun, with a ROI that beats almost all other investments so far.
Keeping your money in gold is even riskier, since anyone can take it from you.
No one can take it if no one knows where you hid it. The only risk I see is buying goldplated tungsten instead of real one. Long term it's a no brainer, you mentioned fiat inflation yourself.
Real estate is risky, too, since it's localized risk with no diversification and no liquidity. And can be taxed to hell and back.
Real estate is not just buying hard assets, but REITs, notes (>9% per year) , construction, holiday rentals, land. Lots of money to be made.
Diversification and tax reduction by location. There are still places where you can build a villa (including land) for <300K, and make it back in less than 5 years, while additionally the asset's value appreciates.
People always need a home, some cultures still make lots of babies, and some economies are still growing.
In one of these places I bought land for $0.25/sqm about 8 years ago.
There is no yearly land tax requirement on the land itself. I'll better not tell you today's value, the ROI is more than good enough for me to put it on sale this year.
And this was a 'bad investment', the other one I almost bought went from $20K to $500K in 1.5 years.
Location, location, location - and luck.
But the opportunities are everywhere, even in Bulgaria you'd make good money buying property during COVID (I saw apartments in tourist locations (Bankso, Sunny beach) offered for 12,000 Euro online). Today their price is 3 times higher.
Disclaimer: I wouldn't dare to try this in the EU with their energy efficiency regulations and bias against landlords.
It's just a question of time until they confiscate everything for the 'greater good', or start taxing air (well, 'carbon tax' is pretty much it).
I guess you have treasury bonds, but ...
They don't deliver the requested 10% unfortunately, just good to park money until one finds something better.
But there is one important point for some: the US treasury doesn't ask for SOF if you invest directly with them.