Meat, plastic and electronics are the problems I agree completely.
We can change the packaging slightly. I already heard a lot about some vendors in Germany are going PET-less solution, TamilNadu (a state in India) also started banning plastics and packaging.
My core idea is social policies will not change unless people are willing to accept it. When your locality goes zero-plastic bags, you will start seeing the influences that it creates on your local supplier and then it expands. It is how nature works and definitely, it takes time and effort but slowly it will (may) change the world. But in the end, it will remain at least we tried.