https://alternativeto.net/software/little-snitch/
https://www.g2.com/products/little-snitch/competitors/altern...
There are many alternatives for trying to find out what’s going on. If you don’t want to bother, and most people don’t, well, what else is there to say?
It is generally a good idea to know what software is phoning home, if you can pinpoint it.
If you have any software recommendations, I’d be happy to know.