Very specific question about lost Dark Souls 3 save! Need Help!

I’m hoping someone else has some experience with this! I was unaware DS3 doesn’t support coud save an I lost my Dark Souls 3 save. I went through the files and it’s just gone. Is it possible to use someone else’s save data or put myself in relatively the same spot that I was at? I had done literally everything except one DLC and I don’t have the motivation to start over!

Im specifically asking in this community because I’m not sure what options will work on the Steam Deck specifically since it runs Linux.

Any help is greatly appreciated!!!