Easier way to get my 5 CTF/BO/SH matches?

I’m chasing the achievements for the 5 CTF/BO/SH matches. As far as I can see, going into ranked and trying team area and rolling the dice each time is the only way? I really do not enjoy Ranked, I’m more a chilled out player so prefer to stay in Social or Warzone. Rather than be horrible and quit any match at the start that’s not what I’m chasing (would prefer not to do that). Is there another way?

Big Team Battle. You can roll the dice there.

> 2586218893181855;2:
> Big Team Battle. You can roll the dice there.

Really? I didn’t realize all 3 game modes were part of the BTB roster! That’s awesome. I love BTB!