Camera questions

I have two questions. First, I just bought a stick up cam for our back porch. It doesn’t sense movement as well as I’d hoped. I’ve turned motion detection sensitivity to Max, Motion Frequency to Frequent, and have enabled Motion Verification. Our back porch and the patio below are visible on the screen but it doesn’t notify me of movement unless it’s pretty deliberate movement on the back porch. With these settings, the battery is already warning that it’s low, after a couple hours. Any suggestions? Second, I’ve considered replacing a floodlight with a hardwired security floodlight. Since it’s hardwired, if that light switch gets turned off, is the camera disabled? Thank you.