If everyone suddenly changed their lifestyle to be more sustainable, world would still go to shit. Because again, individuals combined contribute minimally compared to corporations individually.
Not to mention, “carbon footprint” is a myth made by british petroleum and spread by big oil. It is made exactly to scare people like you, making them think responsible for problems not caused by individuals.
Only way to combat climate change is systematic, not individual. You can do you and be more sustainable if you want, but don’t spread lies made by the ones actually responsible.