Correct usage of the verb "divertirsi"?

Question

I was talking to my Italian professoressa and we were basically discussing how our long weekend went. Being an Italian class, she expected me to describe the whole endeavor in Italiano. However, our conversation stopped when I said the phrase, `Noi avevamo molto divertiti.` To this, my professoressa responded, *That is incorrect. Italians do not **have** fun.* (she emphasized the "have")At this point, she was about to explain herself, but one of the higher board members came in to talk to her and eventually she had to leave the classroom.Why does `Noi avevamo molto divertiti` not work as a phrase? I'm assuming that in Italian, some other verb must be used; however, I am not exactly sure which one that could possibly be.

Answer 1

To have fun is mostly translated in italian with the reflexive verb DIVERTIRSI

As you know reflexive verbs want ESSERE as auxiliary plus the reflexive pronoun

MI SONO DIVERTITO

ti sei divertito etc.....

Answer 2

We say “Ci Siamo Divertiti” literally meaning we enjoyed ourselves