Good Indexers for Sonarr

With the closure of RARBG, does anyone have any good, preferably free, for TV shows, as I am struggling here :frowning:

I could not find as well a free RSS that can do a proper search. I did install jackett and use many alternative rss - the daily scheduling works well. But, if I am looking for a past episode - I need to manually perform a search via jackett.