I recently set up Sonarr and Radarr on my home server and I'm loving it.
However, I don't get why you would ever use Lidarr. Why would you ever download music using torrents? You can use tools like spotdl and yt-dlp to download songs from YouTube music and Spotify, it's faster and more reliable; I have had some issues finding torrents of music from less-known artists.
To me it seems like it would be much better to have a tool like Lidarr or have support in Jellyseerr to download music from common streaming services.
I like the idea of using spotdl and yt-dlp but my eyes gloss over as soon as I see that there is no GUI. Lidarr kinda sucks but it gets me pretty close to what I need. Wish I was more comfy without a GUI but don't really have the time to get the hang of it. So it goes.