PS4 saved game data is lost after Restoring Default Settings (after power outage), but screenshots are still there

I suffered a power outage at home, facing the following problem hours after when trying to turn my PS4 Pro on (sorry, my PS4 language is set to Spanish, but I'm adding a translation with every screenshot):

Translation: Checking the system's storage status...Don't turn your PS4 off. When the check is over, your PS4 will reset automatically:

Then the following message appeared:

Translation: A serious error has occurred in the system software. The PS4 will restart

This process was triggered when I selected the fourth option here (Restore Default Settings):

Everything is back (surprisingly, even in-game screenshots!)... but the game saved data, which is gone:

Is there any way to get it back?

Unless you backup your saved games locally or use PS+ cloud storage (with or without auto-upload), it's gone. If you do backup your saves, you can transfer them back.