Sorry for posting again... so in order to use Public WiFi here I have to enter my birth date and phone number (linked to ID), verify it, and that creates a Username and Password (in other words a Profile)
Steps
a) Add/Enter Network name: Wireless@SGx;
b) Under Security, select WPA/WPA2/WPA3-Enterprise
or 802.1x EAP;
c) Enter Username and Password
d) Under CA certificate, select ‘Use system certificates’.
e) Under Domain, paste the provider’s domain’s name.
f) Under EAP method, select 'PEAP';
g) Under Phase 2 authentication, select 'MSCHAPV2';
h) Under Anonymous identity, remove any text and leave this field blank.
i) Tap 'Save/Connect' and enjoy seamless connection to Wireless@SGx.
So I have no idea what all these technical terms mean but since the verification involves my real life information, that profile might be linked to my online profile. Now as far as I know HTTPS encrypts everything but the domain name so it should be safe since I'm browsing normal websites. But it makes me uncomfortable since there's a whole lot of technical jargon I don't get