If this is actually the .losers ransomware....you are almost certainly OUT OF LUCK.
https
/www.pcrisk.com/removal-guides/11834-losers-ransomware
"Unfortunately, there are currently no tools capable of restoring files encrypted by Losers - the only solution is to restore files/system from a backup."
In looking around the interwebs, all I've seen are really sketchy sites that claim to be able to decrypt those files.
I am NOT nearly brave enough to download and install one of them to see what it actually does. Not even into one of my isolated VM's.
See that sig pic to the right? ----------------------------->
That applies....