Well, the dwindled player base divided between Xbox, PS4, and PC, is a huge reason behind getting teamed up against fireteams. Another reason is sbmm. Better players often group up for crucible, so as your rank increases, the likelihood of facing full teams increases. Time of day also has some effect. I find my early mornings has fewer teams playing. At least it's been like this for this week of IB. Just keep in mind, going against a 6 man team, when solo, isn't a guaranteed loss. It's definitely harder, but harder just means an opportunity to practice solo play. Some say to just pick another solo and use them as a human shield, while shooting over their shoulders. Which can be fun. Or practice flanking and or guessing opponent movement/patterns. And above else. If you find yourself losing, match after match. Take a break for a bit. Watch tv, or YouTube, have a snack, or a smoke. Then go back and try again. Practice, practice, practice.