If you are familiar with docker and compose, I would start there with a servarr stack. There is a docker-compose I use called -arr-compose. Has the complete arr stack, including sabnzbd for Usenet downloads. Usenet is a bit weird, you need a server like Newshosting to actually connect to Usenet, that is what you point sabnzbd to. Prowlarr from the servarr stack connects to your indexers. Then you just search and the stack takes care of the rest. Other useful links:

servarr wiki

trash-guides