On the addiction aspect, the addiction stems from purely psychological, at least in my experience, unlike other drugs like nicotine which is chemical/physical addiction. I've smoked weed and tobacco/vapes, was at one point dependent on weed but was able to quit cold turkey and haven't felt any cravings since.
Nicotine on the other hand is very much a constant battle that I feel like I could relapse at time, just a wiff of second hand smoke is enough to give me very strong withdrawal jitters. Infact, I feel that a heavy contributer of my weed dependency was a transference of my nicotine addiction.
In that sense, targeting mental health issues through therapy and appropriate prescriptions for co-occurring mental health conditions will likely help kick cannabis dependence.
There's multiple studies that suggests that the psychological dependency is bidirectional where as pre-existing mental disorders can lead to cannabis dependency, cannabis dependency can lead to exacerbation of the pre-existing mental disorders, and excessive use can lead to trigging mental disorders you maybe genetically prone too and commonly psychosis. Psychosis has symptoms overlapping with schizophrenia, however you're symptoms seem a bit extreme for Psychosis. Is there perhaps a history of schizophrenia &/or paranoid personality disorder in your family? If you don't know, perhaps consider looking into it.