Xbox Series X game saves not showing after crashing.

Platform: X box series x

I can rarely start a multi-player game so I play single player. I can play for an hour or so then the game will crash. When I try to log back into my game, my game saves do not show. For awhile I was able to delete local game saves to force the game to sync and the saves would show up. I could then play until it crashed and they would disappear again. This no longer works, nothing I do will let me access my saved game. I really enjoy the game, but I am forced to not play until the game is fixed. I am hoping my money was not wasted as I would like to play.