I'm annoyed by the climate change (CO2) narrative. It is far too narrow. Rather we should be talking about an umbrella of unsustainability that includes wildlife decimation, biodiversity collapsing, pollution, overfishing, deforestation, water and air quality.
We shouldn't just live in a way that expels less CO2, we should live in a way that doesn't annihilate the biosphere.
And yes, gardens are a great personal way to make a start. Mine too has native flowers which attract lots of insects, in turn attracting birds and bats. Plus some mini ponds. It's far less work compared to a sterile garden whilst much more fun.