You can find people online who are thinking and talking about climate apocalypse (which they call by various specific names). It’s comforting to know that other people are grappling with this topic, and you may find valuable thoughts here to help you with your own process. Be aware, however, that there are no solutions online. Ultimately, it’s up to each of us to find answers for ourselves.
Discussion Groups on Facebook
These groups are useful to see what other people are thinking. They can provide a sense of community, though obviously at some remove. (They are “closed” groups, which simply means you will be required to answer a couple of screening questions as you join.)
There has grown up an industry of counselors who aim to help people with their response to climate change, blending psychology and spirituality to offer comfort. I don’t endorse these people, in particular, but they are the biggest players in the game. Many of these folks have been working for years, and are now enjoying a surge of popularity.