After you have launched the game and confirmed the new save is working, you can turn Steam Cloud back on if you wish. It may ask you which save you want to keep—choose the local one.
If you're looking for a quick way to achieve a 100% save game, you can download a pre-made save game file from reputable websites. However, be cautious when downloading files from third-party sources, as they may contain malware or viruses. Mortal Kombat Xl 100 Save Game Pc