Free video filming and editing software like iMovie?

I have a MacBook Pro, but for some reason, it didn't come with iMovie or iPhoto, so I was planning to download it. I originally thought there'd be a free trial, but there wasn't any, and my parents aren't willing to buy the softwares for me. I'm planning to make a video as a farewell present for my friend, but as mentioned previously, I don't have the software to do it. So I was wondering if anyone could help me by giving me a list of free video filming and video editing softwares similar to iMovie? Thanks in advance for the help!