The book of Acts is epic. It covers events over 3 decades on 2 continents involving thousands of people. Quite a few of the people mentioned by Luke are known to us from sources outside the Bible, see The Historical Reliability of Acts for more on that.
Today we know the book as ‘The Acts of the Apostles’, but humans and their actions aren’t its main subject. Read The Acts – of God? for a statistical analysis of nouns, verbs and speeches in Acts that demonstrate Luke’s main focus.