1) Here's what I found on it: https://answers.microsoft.com/en-us/msoffic...07bd1ee5?auth=1
However, what I've found is that Office 365 has dropped support for macOS 10.13 ( https://www.onmsft.com/news/office-365-for-...erra-next-month ) so I don't think installing Office 365 is an option here.
2) PowerPoint is one of the many applications offered in the Microsoft Office suite of products which you must pay to use. There is no free version of it as far as I know unless you use an inactivated version of it which I'm only familiar with in Windows and not macOS.

This post has been edited by grape sunset: Dec 2 2021, 08:44 PM