Quick tip to anyone who thinks they don't have PowerPoint and is enrolled in college (or dual enrollment classes in high school):
Check your college's website to see if they provide Microsoft Office to their students! (They probably do!)
This will usually be either in the form of Office 365 or Windows 10 for Education.
https://www.microsoft.com/en-us/education/products/office
https://www.microsoft.com/en-us/education/products/windows