If the pad does not appear on the official Lenovo page, you can resort to third-party pages that are safe to download the touchpad driver, that is, they are reliable and safe.
You should not look for the complete pad but separately, in the specifications of the equipment box it tells you the characteristics of the driver, but look in the administrator of the equipment, in device manager, enter and look in the properties of the driver and write it down to download it independently by third-party pages, which is compatible with Windows 10.
If you cannot, in that case, install an older version of Windows 10, for example Windows 10 version 1800, to avoid the driver having conflicts.