No, you can't.
It is nearly impossible to do the things you said unless you don't want to have a job, or eat, or participate in society in any way. I buy food at the farmer's market (when I can, which is to say, in the summer), I buy shampoo bars and get refills of various things in my resealable (plastic) containers. But my medication comes in a plastic pill bottle. I'm a programmer, so my computer has a certain amount of plastic in it. Even my bikes have a certain amount of plastic in them that I have absolutely no control over (or if not plastic, carbon fibre). (I have bikes because I haven't owned a car for 15 years now.)
There is no way out. The problem isn't us. We've been given no choice in so many of these matters. Particularly in North America, where train coverage is abysmal and the cities are built for cars. We KNOW who the 100 biggest polluters in the world are. We KNOW that carbon footprint is a scam concocted by the oil and gas industry to shift the blame from corporations to consumers, so people like you will do their propaganda for them. I want to keep living, so I buy things made out of plastic because I'm simply not offered a single other choice. I'll wager that my 'carbon footprint' is in the bottom quartile, and it doesn't matter, I still have to buy this shit and prop up the 'demand'.