While I don't have any specific org or board recommendations, I wanted to point out that your post — for me at least — was very difficult to parse.
You're clearly skilled at writing, but what you've written doesn't necessarily read as "skilled at communicating". As you're looking for work writing non-prose, I'm not sure you're applying your flex correctly.
I asked cGPT to simplify your text a bit. It's not perfect by any stretch, but it gets your point across, and does it succinctly:
Living in a van has made me realize I want a paid advocacy role using my persuasive writing skills. I'm interested in green energy and climate causes. I'm not good at self-promotion, so I'm looking for organizations that need news analysis. I have experience as a copyeditor and want fair compensation to clear my debts in a few years. Any recommendations for organizations or job boards for someone with my skills?
And please don't take offense; this is coming from someone who is often verbose, and generelt has a very difficult time with being succinct, to the point where emails end up so long that potential clients just ghost me. It's just that it's a lot easier to see it in the writing of others than in your own, and I want you to succeed ❤️
Best of luck with the job hunt!
(Edit: I was reminded a bit of this, sorry 😅)