Be careful how you hold the laptop when the display clamshell lid is closed. I prefer to hold the laptop by the sides when handling the laptop to place it into a laptop bag. If I need to carry it to another room, then I hold the laptop flat like carrying a pizza box or a waiter/waitress carries a tray.
If the laptop is held by your hand & squeezing your hand to hold it to prevent it from slipping out of your hand, then you will likely apply too much pressure to the screen causing the screen to press into the keyboard (and friction occurs from inadvertently tightening & loosening the hand's grip on the laptop).
When transporting the laptop in a bag, make sure nothing else in the bag is causing any pressure on the closed laptop. Same thing when setting down the bag containing the laptop.