Recommendations for sunglasses while driving

I just started working as a delivery driver. I work about 23-25 hours a week. All my shifts start around 4:30-5 and end 10pm-12am depending on the day. I’m only working this summer for now so the sun will set by 8-9pm on all my shifts

I have this pair of sunglasses I got from Amazon last year. I like them because they’re big enough to fit over my eyesight glasses. But I’m not sure if they actually work like how sunglasses should though.

I’m looking for a pair that can fit over regular glasses and that actually protect against the sun. I’m open to whatever price ranges, I’m willing to invest a little if they actually work.

ALSO I wanna know if anyone has tips on driving at night? Im comfortable with it but I never did it that often before becoming a driver. Is there anything I can do to protect against staring at the bright headlights of oncoming cars? Is it ok to wear sunglasses at night while driving?