There's two way to win good money. One legal and other illegal. Let's talk about the first method:

1) You can buy Bitcoins in localbitcoins and then, sell it in some marketplaces that offer payments in installments (like 12x in credit card). This way you pay 5% of tax to website but you sell it with 13, 14% of profits. In many LATAM country BTC can be sold in Mercado Libre (affiliate of Ebay). So on Ebay you can sold it too. Digital or Paper Wallet.

2) You can sell things in darkweb (I'm not supporting that), but the risks are very high. Not because of police but because you can invest hundreds of dollar and stay with your money stucked.

Btw, there's always a right way and many usually (ecommerce of usual items like shirts, toys) of earn money.