That was a cool description of those signs we always see but never really understand! :) I can say I only recognize the recycling symbol. I think by buying less, you mean managing our shopping, and that's really important. I agree with what you're doing. Even if we get rich, it still works better! :D
In Iran, we have some websites that find cheap products and display them on their platform. They show which shops have the products. For example, if I search for a printer, it shows me in which cities in Iran it's available, and I can choose between different prices. Sometimes, border cities or those near the sea offer lower prices.
We also have another website called Divar, which means "Wall." It's a platform where people can post whatever they want to sell—new, used, or even broken items. Shopkeepers can also open their shops there. One thing that's very familiar in Iran is that whenever we go somewhere, we say "Takhfif," which means "Give us a discount!" and it is like 50/50 sometimes they accept.
Even in local Shops We usually ask for Takhfif because we know they're selling at high prices and can afford to lower them! :D
RE: Buying Less Allows You To Shop Responsibly