I usually don’t offer free advice. But I will make an exception this time for the greater good.
Don’t connect your phone and computer to public WiFi networks without VPN.
Install VPN software in your computer and phone and turn that on every time you are about to hook on to public WiFi.
But how? Ask Google. There are many free VPN services for Windows and Mac; iPhone and Android.
Using any VPN software is magnitude better than using none to protect your privacy and security. You don’t need to be a celebrity to get snooped or hacked.