Cant play online, I know this isn't a general question but its really irritating me

So I’ve been trying to connect to multiplayer servers for about a week but can’t get them to work. The error is this.

sorry, Failed to connect to multiplayer services. please try again later. Error: Server Unavailable.

I’ve tried everything.

verify game files.
port forwarding.
restart PC.
restart steam.
changed VPN settings.
Permissions through firewall.

I really want to play it was one of my favourite games growing up and wondering if this is something I need to get a pro to look at or if its a bug that the Devs are or aren’t aware of