Outdoor Camera Spotlight only comes on for 2 seconds

My outdoor camera light comes on for only 2 seconds at night when I approach it. Isn't it supposed to stay on until it is not viewing anyone? Is there not a minimum of time it should go on when signaled? And why only sensing 8 ft away?

This is a brand-new camera as of 12/22 and also, I am in self-monitoring mode for now (does that make a difference) Thanks in advance