Why am I getting the same maps?

When I go into matchmaking on any playlist I am only getting the same three maps.

There is 13 in the game, but I am only playing 6 of them, is my game glitched?

please help I am tired of playing the same maps over and over again

I think it depends on the playlist.

343 being lazy which they seem to excel in

If you play Infinity Slayer, and some Big Team Infinity Slayer you will get all 10 maps. Each one of them has 5 maps, and are completely different than the other playlist.


Also to Clarify:

There are only 10 Maps currently in matchmaking.