Hi,
If you mean the previous FreeCell games/statistics stored in the cloud, resetting the Microsoft Solitaire Collection app on Windows may only clear local app data. It does not necessarily delete data already synchronized to your Microsoft account.
Please check the Microsoft Solitaire Collection account/statistics settings for an option to reset or delete your game history.
If there is no option to remove the cloud-synchronized FreeCell history, I recommend contacting Microsoft Casual Games Support and asking whether they can reset or delete the FreeCell game data associated with your account.
Avoid deleting your Microsoft account or unrelated Xbox data just to remove the FreeCell history.