If you need to use your phone, it's smarter to use your phone's cellular data rather than the public WiFi.
If you need to use a laptop, use your cell to create a personal hot spot for internet access.
If there's no other way to go, and you feel you must use public WiFi, install a VPN, virtual private network on your devices. Just Google "VPN services," and you'll find several like Hotspot Shield, NordVPN, or others which can encrypt your data.
It's far better to be conservative and cautious than to assume everything is safe.