"Best" investments..
1/ yourself, your own business
2/ long-term stock market index fund, NASDAC, DJI, AMEX, etc
3/ real estate
4/ Au, Ag
NFT, Bitcoin, single spécialisé stocks as mentioned are for speculation, and have huge volatility and risk.
They have a history of becoming worthless like all financial bubbles.
Just the ramblings of an old retired EE
I AM NOT GIVING FINANCIAL ADVICE.
Bon chance
Jon