Only about 1 in 5 people who use cocaine become addicted to it [1]. It also looks like it's pretty hard to overdose from cocaine alone. Overdoses seem to happen due to impurities mixed into the drug.

[1] https://www.michiganpsychologicalassociation.org/index.php?o...

It should be obvious from the massive scale of the illicit narcotics industry that most users are not dying or becoming problem-users.