> the earth can heal itself if we stop polluting it

Nope, we're currently moving gigatons of carbon from the geosphere to the atmosphere and a significant amount of that carbon will remain for tens of thousands of years. If we miraculously stop emitting tomorrow, we wont have fixed the problem, we would just stop it from getting worse. Source: https://yaleclimateconnections.org/2010/12/common-climate-mi...

If we want to return the climate to pre-industrial, we need aggressive emissions cuts to net zero AND massive carbon removal later this century.