Not saying don't do those things, but we need society-level action to really make an impact. To plagiarize the saying about the internet and censorship, capital

Not saying don't do those things, but we need society-level action to really make an impact. To plagiarize the saying about the internet and censorship, capitalism is a self-correcting system designed to route around any "errors" like individual ethics/behavior that produce non-optimal profits according to "the rules" of the system. If you reduce the demand for coal because everyone chooses to pay the extra for solar energy, someone is going to scoop up that cheap coal and find a way to use it. You have to "change the rules of the game" to make any impact, and that's society/collective level action.