How to delete files on a Chromebook?

I have a new Acer Chromebook CB3-532 which I like quite a bit, but deleting files is confusing. I'm trying to delete files from Videos, but there is no menu option for this when right clicking. There is no option in the title bar either. I've looked through the help menu that comes with the book and on YouTube.
Answers

R R

Do you have an android phone? do it the same way you delete files there.