If you're comfortable installing your own server software, you might like to know about microblog.pub. It's a free open source single-user Fediverse server which is very lightweight and has a minimalist interface.
You can find out more info on its documentation site at:
There's also an official account you can follow for updates:
As it's part of the Fediverse, microblog.pub accounts can be followed from Mastodon etc.