The bottom line is don't play objective gametypes without a party that will fill up most of a team, or at least don't expect to win if you don't. Most people who go for objective gametypes are in a party and are going to wreck an unorganized team. There's also the possibility that this is your own fault for not using teamwork. Best teamwork: Find the nearest teammate (not about to die) upon spawning then follow him around so you can effectively double-team an enemy without ever talking to eachother. Also because objective gametypes depend highly on spawns, sticking together will give a high spawn influence to the nearby spawnpoints (assuming Bungie hasn't screwed it up by placing strong respawn zones).