Download Xbox/PC-Cloud savegames

There is no way to transfer games from the console to the pc. You have to download them through the windows store or the xbox app. If you have your savegames in the cloud and start the game on the pc they should synch with you cloud savegame as long as
you use the same account.

He would have to ask the developer but save games are incompatible across platforms which includes digital sources virtually always

If the game you deleted was a Xbox One game, then your savegame data should be safely stored online in the Xbox Cloud, unless you chose to delete the savegame data from "all" consoles.

If you only deleted the local savegame storage, simply launch the game (after installing it, if necessary), and then let the console synchronize your savegame from the cloud.

If there is a conflict about the local savegame and cloud savegame, make sure to choose the cloud version in the confirmation dialogue.

The Xbox One has a specially reserved storage space to keep a local copy of the cloud savegames stored online.

That storage space is only used to keep a local copy of your savegames to speed up loading, or to store savegames temporarily when your console was not connected online.

If you clear that save game storage, this storage is cleared.

If the console was connected online, your savegames are already synced to the cloud, and will be re-downloaded the next time you start a game.

If there are unsynchronized savegames on your console, because the console was offline, your savegame for that offline play will be lost.

It depends on how you lost your savegame.

If the save was already synchronized to the cloud in it's "lost" state, then there is nothing you can do to bring it back.

If however the local copy of your save was erased while the console was offline, you can follow the instructions of XBF Leonzo G, and clear the local copy with the empty save.

Then when you start the game again, the console will try to download the last synchronized savegame from the cloud.

If the emptied savegame was not yet uploaded, this will then download your last intact savegame, so do NOT abort the download.