If you're a solo player tired of getting matched into in-progress games against full fireteams in IB...
I encourage you to look at the roster while the game is loading. See if the roster team has a 4+ person fireteam. If so, go into the pause menu and see if you're about to be pubstomped.
Then go into the menu and go into settings-> change character.
Repeat until you find a balanced game instead of medical waste.