I added a motion sensor to trigger my cams because they initially weren’t getting people on my porch soon enough to get full face video. That has worked well for over a year. I did spend some time setting the sensor up and tried several locations until I got the desired results without false alerts. I put the sensor in an old blink camera case to protect it from the weather and its been up almost a year. That might be the answer to your driveway issues. The motion sensor isn’t as smart as the camera’s motion sensors, but if you find the right location, it can augment your detections.
Here is a link to my case hack. It’s not pretty but it works.
(Motion sensor outdoor):