Lost all my data

Hello,
I had to reset my computer few weeks ago (MacBook Air) via TimeMachine. When I open the app from the backup I registered before resetting the computer, my library is empty like the app was never used. I don't think I created an online synch when I downloaded the app in the first place since all the data should be stock directly into my computer.
Can someone help me please it is very urgent
Thanks in advance
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