ER Save Recovery
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Recovery of corrupted save file:
-Backup your save file(it is usually found in the path C:\Users\%your_username%\AppData\Roaming\EldenRing\%your_steamid%\ER0000.sl2)
-Launch the program ERSR.exe
-Enter your Steam ID(name of the folder that contains your save file)
-Select your save file for repair
-Select the required save slots (by default, this is the first character slot)
-Press Run
-Don’t press any buttons on your keyboard or mouse to not interrupt the script
-After process is completed, you can close the program and start the game.

To use your save file on a different steam account:
-Follow instructions on top and in the program use desired Steam ID

One condition:
Chance of recovery is not 100%, but I hope it will help someone.