I'm not saying I'll get fentanyl, it's not sure but for example if I choose to get 2 g of fentanyl from a market from the dark web that sells worldwide, would it be possible for the police to stop it at a border and find out where the fentanyl was supposed to go, meaning to my address? Could they come to my address and arrest me? That's only one of the more things I'm not certain about, but there are other things uncertain as well, like it's not even sure if the fentanyl will come here, if it's pure enough, if it's something else other than fentanyl
You would have to be very careful if you did that, and make absolutely certain that you can deny all knowledge of it and they have no evidence to prove otherwise. Presumably any parcel would have to have your address on it, or it would not b
e able to reach you. So you have to assume that you might be questioned about it. To keep yourself safe, you would need to do (at least) 3 things.
(1) Use an untraceable payment method. (If you use bitcoin, put it through a bitcoin mixer at least once. Even then, bitcoin can be traced, if the authorities make enough effort, but they probably wouldn't bother for something like this.) Better would be an anonymous, prepaid credit card, which you purchased using cash. Destroy the card after use. (Burn it, or something like that. Don't throw it in the trash.) Whatever you do, don't pay by credit card, debit card or bank transfer. If you buy bitcoin using some traceable method, you better think of a plausible sounding reason for why you purchased it.
(2) Access the site on the dark web (using Tor, obviously) only after
switching off javascript on your computer. That is important. Otherwise it is possible for a malicious script on the website to determine your IP address. You have no way of knowing whether the site is a honeypot site run by law enforcement.
(3) Leave no trace on your own computer. The best way to do that is by booting to a live OS, such as Tails, for the session in which you access the dark web site. If you can't do that, then next best is to run some software that securely erases your browsing history and other things. For that I would recommend EastTec Eraser. You need to ensure that the settings are OK. Erasing
all traces of your activity is possible but requires attention to detail. As well as securely erasing all relevant files, you should also securely wipe all the free space on your hard drive. If you are paranoid - and for this you probably should be - you should also securely wipe the slack of all existing files. If you don't know what I am talking about, you don't have the skills to make this purchase safely.
It would also be a good idea to uninstall the Tor browser after you have used it (but before you run EastTec Eraser), Alternatively, use Tor via a good VPN, such as proton, so you don't need to install Tor on your own computer at all.
If questioned, say you know nothing at all about the parcel, but say nothing more. Refuse to answer
all questions. Far too many people incriminate themselves by opening their mouth when they should have kept it shut.