It honestly sounds like you are just running into the typical lobbies on COD. I run into similar situations that you just listed all quite frequently so I do not think it's you.
It also depends on the game mode you are playing. Generally there will always be campers on Call Of Duty but certain game types promote camping vs others. The best thing I have found to counter these type of people is to pay attention to the radar, pay attention to generic camping spots to keep an eye out there, create a class which makes you a ninja so you do not show up on radar, target finder, all that good stuff, or play very fast paced and try to quicker your reflexes. I have not been playing Call Of Duty for a long time but it is obviously a fast paced game and I have found those with the quickest reflexes tend to usually get the kill. An example would be just a couple rounds ago I entered a building and knew that the right corner from the door way is a spot where people tend to camp, I walked through the door way aiming at that spot and low and behold some guy was camping there and started to shoot me but I had already killed him. You really just have to be aware and also take note on where you teem mates are being killed from or let them take the lead.
Unfortunately in Call of Duty you don't run into random people who are really team players. I have common instances where the enemy walks right in front on my team mate and kills me and my team mate doesn't even bother to shoot lol it just happens.
If you want to play a couple rounds I'm down just message me your GT and I'll add you

I typically play Domination, Hardpoint, or TDM.
This post was edited by RatM on Apr 25 2013 09:49pm