Team slayer rank in halo 3. can someone help me?

[Person P]

Can someone help me get my rank up in team slayer. i keep getting matched with crappy teammates. my ranks are
lone wolfs; 39
team slayer;20
team doubles; 16
squad battle; 1
mlg; 9
team swat; 15
team snipers; 10
and im a commander grade 2 with 664 exp.
all i want is a 40 and i CANT get it in lone wolfs so i want to either get it in slayer, doubles or snipers. my gamertag is; Logank1995. im 13