Jesus is entering Jerusalem, and those who are entering Jerusalem alongside him, they are excited about Jesus. They believe that Jesus is a king, and that Jesus is ushering in the kingdom God had promised would arrive with a future descendant of the OT King David.
This crowd of followers doesn’t yet appreciate that Jesus, this new king, is also the Son of God. They don’t understand that for Jesus, before the throne would come the cross. But they do herald Jesus as a King. They do see Jesus as a savior.