Explain what to do if saves are not found

README.md

@@ -102,6 +102,7 @@ Detailed help documentation is available for several topics.
 
 ### Other
 * [Troubleshooting](/docs/help/troubleshooting.md)
+* [What if my saves aren't found?](/docs/help/missing-saves.md)
 
 ## Community
 

docs/help/missing-saves.md

@@ -0,0 +1,36 @@
+# What if my saves aren't found?
+Ludusavi mainly gets its data from [PCGamingWiki](https://www.pcgamingwiki.com).
+The first step is to make sure that the game in question has an article,
+and if so, that it has save and/or config locations in the `Game data` section
+for your version of the game (e.g., Windows vs Linux, Steam vs Epic).
+
+When the wiki has Windows save locations, but no Linux/Mac locations,
+Ludusavi can *derive* some potential paths that aren't listed on the wiki,
+such as checking Steam's `compatdata` folder for the game's app ID.
+Sometimes, the fact that the game is running via Proton
+or was loaded as a non-Steam game can affect the exact save location,
+which may require adding/fixing the wiki data.
+
+For games that have a PCGamingWiki article, but no save info,
+Ludusavi also checks for Steam Cloud metadata as a fallback.
+If the game doesn't have Steam Cloud support, then this won't apply,
+and the Steam Cloud info is ignored once the wiki has save locations listed.
+
+Every few hours, the latest changes from PCGamingWiki and Steam are assembled into the
+[primary manifest](https://github.com/mtkennerly/ludusavi-manifest).
+Ludusavi itself relies on this for save info,
+rather than constantly checking the wiki when you run the application.
+If the save location is listed on PCGamingWiki,
+but was only added in the last few hours,
+then it may simply not have made its way into the manifest yet.
+You can also use Ludusavi's "other" screen to check when the manifest was last downloaded.
+
+If the paths seem to be listed already, but Ludusavi still doesn't find it,
+then try double checking your [configured roots](/docs/help/roots.md).
+Ludusavi may only be able to scan some paths if an applicable root is configured.
+For example, having a Steam root will enable Ludusavi to check its `compatdata` folder.
+
+## Flatpak
+If you're using Flatpak on Linux, then by default,
+Ludusavi only has permission to view certain folders.
+You can use a tool like Flatseal to grant access to additional folders.