They already are by using carbon credits
If governments cut down less forests (or even plant new ones!) it's not cheating. That should be the goal.
To fix global warming we have to do both. Stop using fossil fuels and get out more CO2 from the atmosphere.
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:
How much each change to the atmosphere has warmed the world:
Recommended actions to cut greenhouse gas emissions in the near future:
Anti-science, inactivism, and unsupported conspiracy theories are not ok here.