One thing I will say is this: you had a popup come up multiple times asking you if you wanted to port into the boss fight. Why you didn't take the teleport, I don't know, but you were given this option (multiple times, might I add. 15 seconds into EVERY boss fight it asks you if you wish to teleport.) and you didn't take it. In your teammates eyes, you could've been AFKing for no reason. Did you, perhaps, bring up "Hey I don't know how to get back to you guys?" If not: that's on you.