I don’t know, add the sites where the content that you want can be found. I think Jackett also had links to the regular web pages if you want to look around.
Was not aware myself, thank you!
I do not use whisparr specifically, but generally for the *arrs you can use jackett to support way more sites. It essentially converts site specific data formats to well known formats that the *arrs support.
I have run nextcloud:latest on Docker for the last 2 years and have had 0 problems. Maybe upgrading all the time works better than by releases.
Music streaming is also much cheaper to run than video, so they can offer more reasonable pricing.