Need to recover pics from moto g2 [unrooted].

I'm totally ****ed up.

Accidentally I have deleted my (priceless) pics folder from my phone memory of Moto G2.
All methods I could find on internet to recover files from phone memory require root access.
But mine isn't rooted.

To root moto g2 first I have to unlock bootloader, this will wipe up the whole internal memory.

Now I don't know what to do!!
Should I unlock bootloader wiping up data second time. And then use diskdigger(root) to recover files?

Guys help me out, throw some suggestions
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