There's no need to use modbuddy to look at the base game files, or other people's mods. They're simple xml files that you can open in any text editor. The modinfo file is also an xml file, and can be opened in any text editor.
You'll find all the base game files in: Steam\steamapps\common\Sid Meier's Civilization VI\Base\Assets\Gameplay\Data
Mods downloaded from Steam Workshop will be in: Steam\steamapps\workshop\content\289070