I cannot join breakout..

Games Halo 5: Guardians
1

I can not join a single break out match, It doesn’t go past Searching for Spartans… why is that?

2

same

3

Same here.

However; I am able to play if I join a friends fireteam.

Queuing soIo for breakout returns the error, “unable to match.”
After the February reset, I was able to play again, but just the first 10 rounds. Once ranked, I am not able to join games solo.