Cannot download Office 365 on macOS El-Capitan

Solution 1:

I can't download it to my computer..

App Store page says OS X 10.6.6 or later is required.

After sign-in, https://portal.office.com/account#installs you'll see two different links for Office download. One for MacOS Sierra 10.12 or later and another for 10.10 or 10.11.

You can also see all available apps https://www.office.com/apps?auth=2&home=1 and use their online version with our without simplified ribbons. I never used them, so can't say about functionalities.

computer is still not taking Mojave.

You can check compatibility for Mojave at https://support.apple.com/macos/mojave

For Sierra https://support.apple.com/en-us/HT208202

and for High Sierra at https://support.apple.com/en-us/HT208969

apple said it might be a hardware issue since I was practicing scripts on the terminal last year.

That is very broad.