What is surveillance if not just looking at you? So if you object to the state or private actors being able to track you every movement through the public space

What is surveillance if not just looking at you? So if you object to the state or private actors being able to track you every movement through the public space, you essentially are advocating for banning people from looking at you when you walk the street. Somehow it doesn't seem the same though. Somehow intuitively it seems different when people just look at you on the street and when some organization compiles a single database where every move of every person is recorded.