I’m confused

chef town

hi i need help with chef town i was on level 8 and my tablet played up i had to put my tablet back to factory setting when i put chef town back onto my tablet i did not no that i could put level 8 back on i put a new game onto my tablet which means ive lost level 8 plus my gems i had i had about 357 gems how can i get them back if you check you can found them please help
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