What substances are legal or normalized in your country?
I'll start with myself (Egypt).
Caffeine: nearly everyone drinks tea or coffee at least once a day if not more despite neither of them being grown here.
Tobacco: Smoked in cigarette form or flavored tobacco using a hookah. The percentage of smokers here is very high, there's more smokers than there isn't. Even if you don't smoke there's enough second hand smoke from everyone else lol.
Alcohol: legal but its use is somewhat stigmatized because of a majority Muslim population. However I regularly see broken bottles of alcoholic drinks along the sidewalks so a lot of people are probably hiding their drinking habits.
Hash/hashish: I don't think it's exactly legal but it's very normalized among a lot of people. Some stigma because any form of inebration is considered bad by religious people but not nearly as stigmatized as alcohol.
I'm in the US, so it varies by state, but in Colorado where I live we have
-Alcohol (federally legal, widely accepted) tons of breweries, bars, there's even booze at the coffee shops.
-Tobacco is legal if you're over 21 locally (18 federally I believe), you can't smoke inside, and a lot of people really look down on it still.
-Cannabis, all forms, are legal and sold in stores within the state. Although it's still federally illegal, more and more states are legalizing, so it's only a matter of time. You can buy up to an ounce a day, or I think 7 grams of concentrates, or edibles like gummies, chocolates, candies, etc
-Psychedelics - Most recently Colorado decriminalized magic mushrooms, DMT, ibogain, and mescaline for personal use. You can grow within certain perimeters, possess as much as you want currently, but can not sell. Soon there will be mushroom therapy centers, and there are currently centers for IV ketamine therapy (you can also do mail order).
-Caffeine is legal, everywhere, and highly encouraged due to the American work culture.
I think those are the most notable currently, although things continue to change quickly in Colorado. Cheers!