. . . . what Greek fonts I should install on my PC (windows 10) . . . .
Does Windows 10 have the laungage and keyboard input options set to Greek or Greek installed as a second language and can you switch between languages?
Windows software picks up the default language settings from Windows and if the necessary translation files are present in the software eg Greek for MM then it will be in that language detected at installation.
Some programs, eg Microsoft Word, have the option to switch languages - MM does not have this option to switch languages once installed.