so i recently heard about the deep web, how it uses bitcoin and how the transactions made there are anonymus. to my current understanding of bitcoin every transaction is written in the blockchain and is known and can be seen by anyone. so my question is where is the anonymus transaction written? and why can't you see it?
All transactions are public, they go to the blockchain.
You can connect anonymously to the blockchain, by using a node running as a Tor Hidden service. If you don't reveal your address to nobody, no one can tell it is yours. If you use Tor to connect to Bitcoin network, for broadcasting transactions etc, no one can tell you are using Bitcoin. They can only tell you are using Tor or just an encrypted connection when properly obfuscated (obfs4 bridges).
Download and boot Tails, install/open Electrum and configure it to use Tor (if not already), done.
Don't call it "deep web" (i hate when they invent those stupid terms), because what i described does not involve "the web" at all.
If your country has banned Bitcoin, this is the way to go. And don't de-anonymize yourself by making it possible for others to correlate your address to your real person identity.