I have a question about the usage of (would have +pp)
I've come across lots of sentences like these:
we’d rather do something else with the money we would have spent on a reception!
I would have felt a bit shameful about getting married even though it wasn’t what I wanted.
Wouldn't they have called your father to tell you it's closed by now?
She would have said no whatever we picked.
Iv'e been looking for it's usage for a while but all my attempts are in vain. So could you please tell me how do you use this tense as native speakers?