How not to get spawn killed

Ok well there's no foolproof way to not get spawn killed. If you play modern warfare 2 for any amount of time you will get spawn killed and that I can guarantee, but at some point in time you will spawn kill someone else, so it'll eventually even out.
By my definition to get spawn killed you have to die within 1 to 3 seconds after you spawn. The best advice I can offer is how to not get spawn killed as much. The best thing to do is to assume that your not safe after you spawn, no matter what map, no matter what game mode, and no matter how many of your teammates are around you. Take your time and check your surroundings. Check your radar and see where your teams arrows are clustered. Assume that most of the enemy team is spawning exactly opposite of that cluster, but also assume that one or two of them are nearby coming to kill you. Next consider your game mode. certain game modes will have much more spawn killing than others. TDM for instance does not have a lot of SK since the spawns change up. Modes like domination where spawns are determined by what flags you have will have alot of SK. Get to know each maps spawns as well as you can. This will help immensely, especially at the beginning of the match.
Often times enemy teams will try to engage in whats called spawn trapping. Clans especially like to do this. On a mode like domination they will capture 2 flags, forcing your team to spawn by your only flag, and then they will camp every exit point from your spawn and mow you down one after another. Even if you do manage to kill one or two, that are camping your spawn they will mostly likely magically spawn nearby and kill you again, or be using tactical insertion and return to the same spot.
With a good enough team you can make a coordinated push out of a spawn trap and resume normal game play, but if your playing with randoms you will most likely be trapped for the duration of the game. If that is the case and there is nothing you can do about it, then I would just quit and salvage what you can of your K/D. You will take a loss for quitting, but then again you would have lost anyway.