It’s even more fun if you read the entire Asimov book catalog that’s set in the same universe as Foundation using the in-universe chronological order… unless you meant that’s what you did. That’s broadly “I, Robot”, the Robots series, the Empire Series, and the Foundation series. I’m sure some people don’t like his later books that tie it all together, but most of them are probably elderly and read the original series before the newer ones were published or something.