I’m sorry if this has been asked before, I searched using different terms but couldn’t find a similar question. I’m a noob. When using apt install sometimes it recommends a bunch of other packages. I read that GUI tools generally install them. I don’t use GUI, I use the terminal. I know of the --no-install-recommends flag, but I am wondering whether and when to use it. Should I just let it do the default thing?
For example, this is the list of packages when I try to install Calibre:

Some of them seem useful based on names, but for example blt-demo?


I don’t even install recommends, let alone suggests.
I’m not sure which one the Polish sugerowane refers to (sounds like suggests), but zaleznosci I’m pretty sure means actual dependencies. There’s lots of generic python stuff in there, I’m guessing this is a fairly fresh install and sooner or later many of them will get pulled in anyhow.
Yes, I think those are actually suggest. I caught that after I posted. So this screenshot is not the best example.