In the case of Crunchyroll why not configure sonarr to scrape nyaa? Crunchyroll at least in my country has a pretty bad catalog, skip some seasons for whatever reason (kaguya it has the second season only, don’t have the 4th season of jojo neither the second of takagi-san etc etc…) and…. There are no other options for anime streaming here. So I said fuck it and configured sonarr, set the filters and everything , now I download everything from there and don’t have to depend on Crunchyroll. It works almost flawless, Only had a few misses like kimetsu no Yaiba that for some reason it insisted on picking up some unknown raw groups over the English subbed ones with higher scores on my list, but those cases are pretty rare.