Hello Joel ZHAO,
The Surface Laptop 7 repair guide here notes that some replacement screens have only two connectors but continue to work normally, including touch. It also recommends updating the Surface firmware after replacement.
https://www.ifixit.com/Guide/Microsoft+Surface+Laptop+7+%2813.8-inch%29+Screen+Replacement/174667
(Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate and safe information. Watch out for ads on the site that may advertise products frequently classified as PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.)
Before installing it, compare the replacement SKU with Microsoft’s parts list for your exact screen size and color. Microsoft lists different display assemblies for the 13-inch and 15-inch models.
https://learn.microsoft.com/en-us/surface/service-guides/surface-laptop-7/surface-laptop-7-device-information-and-service-parts
If the SKU matches your device, the lower cable count alone is not a reason to return the screen. Follow Microsoft’s repair guide, install all Windows and Surface firmware updates, then test the display, touch, and camera.