Coop ain't worth it
After using 20 coop passes back to back on the "defend cantlin" mission I can confidently say unless you plan on playing with friends or have a good enough setup to just solo the event by yourself with 3 bots then don't go any where near COOP, it easily attracts the more "casual" player base who really are just there to see if someone else in the lobby can kill the boss for them.
And since coop really doesn't have any sorta punishment put in place for players who leave or actively are not even playing the game, you can as easily go into a coop match AND LEAVE without losing anything you even get the coop pass back??? You either kill the boss yourself (I can do this like 30% of the time) OR you can just leave the match early and restart the process with no sorta fallout, it's honestly starting to look easier to just go into the lobby and if you know for a fact you ain't winning by the end of wave 2 then just leave and go into a different lobby so your not wasting your own time 😂.