My questions is not on the technical side, since obviously you can create an address in a very much anonymous way. However, when it comes to spending it or convert it into fiat or even when spending it on a legit shop online you have to leave an identity trace.
I know that with small transactions is fine, under the radar basically, but what happens with significant ammounts?
I am asking this because I intend to become rich in 4 or 5 weeks

As is known when you transact must leave ip address track, so bitcoin is not anonymous, but pseudo-anonymity. if you use the online store you must be required to fill the identity and there must be a tax of what percentage.
my question is how you become rich just because of asking this?