you have a lot going on here.
Sonarr version (exact version): latest (1.27.4)
this is not a valid sonarr version. System => Status gives that to you.
All of these issues are going to be 1) poor docker paths/permissions and 2) poor configuration
also don’t censor things…that just makes it several times over harder to debug.
and/or the trash guide linked within will get you squared away
all of your problems are due to poor paths and permissions.
combined with configuring transmission to download to your download folder.
every health issue has a bluebook that links to the wiki
https://wiki.servarr.com/sonarr/system#downloading-into-root-folder