Redownloaded the game only to find all of my campaign saves are gone

As title stated. Redownloded the game after probably a couple of months of uninstalling because I needed space, booted up the game (it seems there has been a new update as the menus are different) went to continue my campaign and all of my saves were missing. I was on the night elf campign, and had saved many many times. Its like the game thinks this is the first time ive played it, I dont even have access to any of the campaigs besides the first two. I spent a while getting to that point and Im really dissapointed I have to do it all again.

WC3 doesn`t have cloud saves in campaign.