https://beportugal.com/portugal-drug-laws/
https://www.reddit.com/r/europe/comments/ldjif4/the_portugal...
San Francisco is doing all they can to pursue the sort of plan you propose. It isn't working. Drug abuse and related crimes have only gotten worse. "I heard about Portugal on a podcast" drug policy has been a disaster.
What does Portugal have to do with it?
[0] https://en.m.wikipedia.org/wiki/Heroin-assisted_treatment
Portgul is relevant because their program of decriminalization is frequently referenced in media and by US policymakers.
Society is just fine with people killing themselves with drugs as long as they are alcohol and tobacco.
The problem is too much money is made off the current situation and most the population has been brainwashed into thinking that making drugs illegal will protect us from them.
They also need to be providing legal, vetted, licensed channels that supply drugs to the users so people aren’t using drugs laced with fentanyl.
That’s the quickest, easiest and probably the least likely to succeed solution.