My apartment on campus has public Wi-Fi that then requires a login screen to gain internet access, how safe is this and should I be concerned so long as I use HTTPS?

iOS says “open networks provide no security and expose all network traffic, if this is your Wi-Fi network, configure for WPA 2 or WPA 3”. I assume whatever settings it has now is “unsafe”. What steps could I take to secure this, or should I just run off my super slow mobile hotspot?

access campus https internet internet access ios login network networks network traffic privacy public safe screen security traffic wi-fi wpa