Your website is going to contain thousands of dollars , so It's going to be under attack all the time. Unless you hire experts from all areas , you will get hacked.
I know no one is born as an expert , and we learn each day ... but you don't have the right to "learn" on peoples money.

Unless It's going to be open source , people won't trust holding their funds in an unknown website like yours.
I checked your recent posts and It seems like you don't know the basic things in how Bitcoin works , nor a programming knowledge, I wouldn't recommend opening such a website honestly unless you have enough resources (millions of dollars) which I assume you don't.
It's not as easy as It sounds since you need to hire developers , designers , and the most important thing security experts , unless you have a team of experts ready to work for free of course (which I assume you don't once again)

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.