Right, you can be anonymous, but only if the money you make anonymously is never used to pay your rent. What's the point?

Setup an anonymous company in Cayman Island, Singapore, Hong Kong or Russia might be a good choice I guess

And then Totally Not A Front Ltd. pays you a paycheck into your legal, real bank account so you can pay your rent? Now you're not anonymous anymore. OK, let the company pay the rent and mail you the keys. There's still a trail for the cops to follow by just...showing up at the apartment and seeing who's there.

Until transactions can cross between crypto and real money anonymously (which is getting harder all the time, and is already effectively impossible at any kind of reasonable price and scale), OpSec requires that you not invest your real money into any such venture, and also never get paid by any such venture. Again, you can still /conduct/ such a venture, but at that point its just an eccentric, high-stakes hobby, since it only happens in an alternate reality where you never need to buy peanut butter or a gallon of gas but can still potentially slip up and anger the feds/cartels/chinese intelligence/whatever. Yes, there are ways to reduce the risk that your "extraterritorial" company is not traced back to you. There is not a way to avoid it completely, and it's a pretty big risk.