Backing up is straightforward:
/home/deck/.steam/steam/userdata/[YourSteamID]/2050650/remote/win64_save resident evil 4 remake save data pc
If Steam Cloud is enabled (it is on by default), Steam usually handles this transfer automatically. However, manual transfer is more reliable if you want a specific version of a save file. If you restore a save manually while Steam Cloud is on, Steam may ask you which version to keep when you launch the game. Choose "Local Files" to keep your backup. Backing up is straightforward: /home/deck/