Bitcoin isn’t 100 percent secure
The whole idea of really being truly invisible is a disconnect between you as the user and your first connection to the internet.
If you use bitcoin, there is a blockchain. And the blockchain is really traceable.
In fact, during the trial of Ross Ulbricht, the guy that was accused of running the drug emporium Silk Road, they were able to trace millions of dollars of transactions to the wallet on his computer. So to try to anonymize bitcoin, you can go to a bitcoin ATM.