It is impossible to find someone you yourself (secret government services) lost.


Now even those who write the code in the apps (the creators of tornadocash and samurai wallet) are called criminals, accusing them of money laundering, illegal transactions, etc., but we know what the true reason for their persecution is (the fight against confidentiality and privacy). Purely technically, Satoshi can also be accused of such “sins” and this would be a good reason for government organizations to start hunting for him (the legal right to initiate a criminal case allows them to begin searching for and determining his identity closely).
 
There are no perfect crimes actions on the Internet, and Satoshi could have made a mistake somewhere and left clues for his de-anonymization.