Questions about example sentences with, and the definition and usage of "Scrol"

A: × I just scrol and see people and then leave online.
✓ I just go online, quickly scroll through people’s posts, and then leave.

I think I know what you are trying to say. Im assuming you mean you just go online to see people’s posts in a short amount of time right? So you can add “quickly” before scroll. Also a lot of native speakers will say they stalk people’s posts. Usually stalk has a negative implication, since stalking is creepy lol but in this specific case people will playfully say they stalk people’s posts.