I had missed earlier when you said you’re on Game Pass. Sadly, that is likely the cause of what you’re describing, as there may be a version mismatch preventing you from seeing valid servers.
This is an issue we cannot resolve with simple server restarts and will likely require waiting until a patch can be published or if you can coax the Xbox patching system to give you an update. It’s a fickle beast.
We are working on a patch to fix emergent issues found in 3.0, but I currently don’t have details on exactly when it’ll drop. Keep an eye here or on our social media for news on updates. In the meantime I can only kindly ask for your patience.