Unfortunately, I get the same error (My IP: 8333 is unreachable).
I did everything mentioned in the links below:
https://bitcoin.org/en/full-node#network-configuration --- https://bitcoin.org/en/full-node#port-forwarding and
https://learn.microsoft.com/en-us/windows/security/threat-protection/windows-firewall/create-an-inbound-port-rule.