The only real solution to climate change is mass genocide of the human race. 8 billion people is not sustainable for the planet. Every human has wants and needs that they prioritize over the health of the planet. We can "green" some of those things up, but it simply delays the inevitable by a few years if we are lucky.

Of course, if some genius gets the population of the Earth to somehow stop wanting the things that emit carbon (transportation, hot water, hot food, modern infrastructure), while maintaining / growing the population, then humanity will have a front-row seat for collapse of society due to resource depletion, rapid species collapse of animals, microplastics-infused water pollution poisoning all that remains.

The only thing, aside from mass genocide, to slow all of that down is for every human to use less. Every CEO has to pledge to sell less each year. Every consumer must pledge to use less every year. The societal controls put in place to enforce this will eventually result in the overthrow of governments that attempt to impose this on their citizens.

We are humans, and what you see happening to the world is simply what humans do. If you want to see less climate change, less resource depletion, less toxic waste, then we need fewer people if we want to make this planet survivable for longer.

It's good to make our activities more green, use renewable resources, recycle, etc., but the reality is that most of those things will only delay the inevitable. Delay is good, pushing the timeline out for the consequences of our actions is something humans are good at.