There’s a little bug in halo 5 right now we’re you play arena summer you start to lag out then you have to restart your game and you get the banhammer. This happened to me 3 times today and all I want to do is get reckpoints , bit seriously 343 fix this bug
I know how you feel but for me it has happened in all arena gamemodes
if you are getting the message “lost connection to dedicated servers” that does not count as a game in your history. (the left fire team messaage idk i have not gotten it to see for my self)