Unfortunately you have been deceived by Satan, the world does not need saving, the idea that the world is under threat and needs saving is the pretext to recruit the spiritually blind into rebelling against the God.
Environmentalism, conservationism, atheism, are all isms that attract the worst of the human race. However it serves God's purpose that it unfolds this way as this is precisely how judgment works.
Yes, of course you have left religion, that is why you believe in the darkness of atheism.
What is offered to you is the realization of immortal existence.