I have the game installed with the Heroic Games Launcher on my Hard Drive. For context; I'm trying to find where my save file is located, because:

I originally installed it with Manjaro, but recently switched to Pop!_OS.
(Both distro's are still installed on separate drives)
When using Heroic in Pop!, I simply directed the Heroic Launcher to where the installed location of Alwa's Awakening was. The game launched just as intended in Pop! when using the exact same install directory, except that now every time I load Alwa's Awakening in Pop!, the save files do not appear.

At first I thought that my save file had somehow been accidentally wiped.
That's not the case however, as when I booted up Manjaro again and launched the game (which is still using the exact same instance of the Alwa's Awakening install), the game saves appear in the save-selection-screen again.
So they appear in Manjaro (where it was originally installed) but won't appear in Pop! despite being the same instance of the installation across both distro's.

That's just the context for why I'm asking this question. All I'm really asking help for, is to find where the directory of the save file is.

The fact that it is installed with Heroic rather than the offline installer file doesn't change the file structure, so if any of you have used the offline installer on Linux, the location of the save file within the games directory will be identical.

I appreciate any help here, thanks.

Bumping since the info might still be useful to someone.

/home/(username)/.config/unity3d/EldenPixels/Alwa's Awakening

This is where the saves and config were on my Linux Mint system, as well as for a bunch of other Unity games I couldn't find the saves for before. I feel like this should be noted somewhere since a lot of people like to keep their completed saves.