Even if everyone in your city stopped doing $whatever you're taking issue with, the climate will not be impacted.

Climate change is a global problem, nothing besides global regulation that's actually enforced will have a meaningful impact. It's just too profitable to ignore climate impact for this to change.

What you're doing is just lying to yourself if you honestly think your actions (even if aggregated to hundreds of thousands of people doing the same), will be a meaningful contribution on the issue.

And just to be clear, pollution is another story entirely. That's primarily a local issue and can be significantly improved (not solved!) through personal responsibility.