If you like them _ultra short_ then I'd recommend 365tomorrows.com which feels like a single page ripped out of a greater (non-existent) work. Most, but not all, have a sci-fi theme.

I was surprised not to see Forster's stories as they are marvelous and public domain. People often cite the machine stops, but I recommend reading them all. The point of it and co-ordination are two favorites

One well formatted ebook source:

https://standardebooks.org/ebooks/e-m-forster/short-fiction

Great resource. There’s a Jo-fi link on about page if anyone wants to help out. Also, no AI if that’s your cup of tea.

https://www.libraryofshortstories.com/about

https://ko-fi.com/evanclewis

Nice thanks for the link.