You’re lucky
if people even make a show of washing their hands.
If they wash them well, then you have just met a unicorn. And even people who do normally wash their hands well sometimes run into issues like there not being any goddamn soap stocked (in the same bathroom, 3 days in a row).
Don’t use the air blowers; just let your hands air dry if there’s no paper towels. It doesn’t take very long and has been basically my standard practice for about 10 years now.