Search isn’t showing me anything for the obvious terms.
I’d like a climbing-specific sublemmy(?), ideally, but I appreciate that’s a bit niche! Just somewhere for chatting about general fitness would be cool. I’d start one myself, but it doesn’t seem very solar-punky.
Your home instance does not know all other communities on other instances automatically, it requires someone on your instance to subscribe to it first, then it’ll show up when you do searches on your instance. I believe this is intended to reduce server load and storage requirements.
Lemmyverse.net is an aggregator that allows you to search across all instances.