I am getting a "Connection Not Private"/NET::ERR_CERT_COMMON_NAME_INVALID error only when accessing Youtube. I have tried 4 different browsers (Brave, Chrome, Vivaldi, Edge) and this error occurs on all of them. Curiously, while trying to use Psiphon VPN, it tells me that Psiphon was unable to set proxy. This only happens on my laptop. My phone on the same network is able to access Youtube just fine.

I have no proxies set up and I am using the default settings in the IPv4 settings. Please help me fix this error.

EDIT: Tried the solutions given here and clearing cache. None of them worked. It's not a browser specific issue.