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Single-user Mastodon Instance is a Bad Idea
(mull.net)
A community dedicated to fediverse news and discussion.
Fediverse is a portmanteau of "federation" and "universe".
Getting started on Fediverse;
Just uses Akkoma or GoToSocial, setup fedifetcher or follow some relays and you can get good enough experience in Fediverse. Mastodon is literally build to handle huge amount of users so it is nowhere near efficient if used for just 1 person.