Keyboard shortcuts for zoom in or zoom out are: Ctrl++, Ctrl -- and Ctrl 0, they can be used for Internet browser (Chrome, Firefox, Edge, etc) or for the applications those have zoom in/out support.
In your laptop also you can use touchpad for zoom in/out.
Put your two fingers on the touchpad (for example index finger and middle finger)
For zoom in : move each finger to outside.
For zoom out : move each finger to inside.
(like what you do on the computer tablet or smartphone)
