Many months ago I asked about this very thing. Got some replies saying I had misnamed or had bad indexers.
I use 3 indexers. Drunkenslug. NZB.su and NZBindex.nl for interactive.
I have used the same format as most people and I have 54 T of Shows.
It is a pain because I verify each episode BEFORE I port it to Plex and EMBY and Jellyfin.
I use 3 seperate systems. One on Windows, One on Umbunto, and third on a NightHawk router.
I do this because it is fun to play with. I also have a very intensive DVD collection that is ripped along with a large GA audiobook collection.
It would be nice but I can live with it by not keeping all of the collection under Sonarr’s thumb.