Legalization is the answer, it moves the money from the illegal market to the legal market. Instead of funding crime, and illegal activities, the money in the legal market creates jobs, money in the legal market is taxed, and tracked.
Counterfeit vape carts and shady cannabis flower is the only way many folks can access the substance. These products can easily come with terrible chemicals — a couple of years ago a string of incidents occurred over street carts containing vitamin E and other substances that caused lung damage.
People want cannabis and they're not going to stop over its illegality. Legalize it, regulate its production.