I keep it all in a notebook, though that was mainly so I could bring it to school and worldbuild at school (we aren't allowed to use our phones during class here). Not sure if I'll switch to digital now that I've graduated and that isn't a concern.
This is one my greatest hurdles. I was using obsidian for a while as well and had some success but had similar problems with motivation. I’ve liked Legend Keeper but dislike the pricing model. Currently I’m just disorganized and throwing ideas into the notes app on my phone which is far from ideal.
Try a notebook! It works great for me. I take bullet points in one with ideas and then write a "wiki" page when I've finalized ideas.
I write rough drafts and ideas in a notebook and I solidify and organize them with Google docs
I like that workflow, it's similar to mine. I typically take bullet point ideas on one page and then write a "wiki article" on another.
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