Problems upgrading from Mojave
I have the Mojave 10.14.6 version. I am trying to upgrade to Monterrey but my microsoft office is not compatible. So I downloaded a new version of office (one time purchase). But it says I need 10.15 or higher. When I go to dowload Catalina from the app store it won't install it because it says I need the 10.15 version to install it (I believe it is the 10.15.7 version on the app store). But I can't find this original version anywhere. Please help! I am stuck with a new office I can't install because I can't figure out how to upgrade to 10.15 to install it.
MacBook Pro 15″, OS X 10.11