Sasuke made a quick reputation as a bounty hunter, but no one knew his face or gender, since he always wore a black cloak, but when it came to fighting, his Anbu suit was noticeable, with which he fought either with magic or with ninja arts, the cases he took were from hunting to extermination, even wanted people who spent years and could not find them, but those who were repeat offenders and who liked to torture or kill innocent people, he always delivered them dead, either by spells or sword cuts, after collecting enough money, sasuke would withdraw from the guild for a whole month then come back, no one had a way to contact him, he only showed up when he felt like it.
So that they do not associate him with his code name was Raven (raven).
In addition to the measures that Sasuke chose to use a kage bushin no jutsu where the original did missions, the clone was doing his homework, and went out to buy products for his potion practices in Diagon Alley.
Sasuke took the opportunity to be seen by several people and thus create alibis.
He was always getting fan mail, sasuke didn't reply to them because he was a nuisance.
Sasuke continued with his research on how to recreate the rasengan, but with his constant battles he found the clue to guide him in the development of this