Newbie here: can this be self-hosted or is it local to a single computer?

I have been using Workflowy.com for many years, and it is amazing. The only thing that bothers me is that it is proprietary and not something I can host myself.

I don't really 'get' how LogSeq works? It seems to run in a browser, but it seems to require local storage? So it is not something I could install on my homelab server and access from anywhere?

(Also, I really don't understand Lemmy. I went to lemmy.world/c/logseq hoping to find a community, and yay, here it is -- but there are no posts? I don't believe that someone created a community and I am the first to ever post in it. Confusion like that is what is making me consider going back to reddit...)