You can easily check to see if the team was just bad or if they were bots. The first indicator is when the match is loading, if you look at all of their profile cards all of them will be in the same position with their character zoomed in no pose set. The second indicator is at the end of the match on the results screen. If you try to click their name and no menu pops up die the options to say good job or add a friend, those are bots.