1. Check if the gestures are enabled in the Touchpad Settings.
2. See if you need to update the Touchpad driver to the latest version.
3. Uninstall and reinstall the Touchpad driver (if updating it did not help).
4. Check if the Touchpad is recognized in Device Manager, and if there are any errors reported.
5. Test the Touchpad on a different PC to make sure it is working.
6. Try to reset the Windows OS or Restore your laptop settings.