Car Paint protection layer question

Automobiles


Hi
I'm a new car driver & owner and I was just wondering out of curiosity and wanting to learn more if the fact that rain water shows as droplets on my car versus appearing smooth on other cars is a good thing or not? Why is it different?
Is it a sign my car was waxed or that it isn't and I should do it?

Pictures attached (my car is the Mazda on the left).

Thank you