It's a weird thing that someone on Nostr accidentally loses everyone they follow on the platform. Were you testing one of your apps on your main Nostr account when it happened?
Earlier today I accidentdeletes everyone I follow. This git them back.
https://tsukemonogit.github.io/luminostr/ - Nostr replaceable event tool - handy if you lose your list of who you follow. Evidently can do other stuff too.
.hostr
Discussion
I saw on one of your posts before that one that you were testing the Lumilumi app.