I could not count the amount of times I see new Buy CS GO Skins running around using a sub-machinegun (SMG) a dozen rounds into the game, when money is plentiful. Rifles penetrate armor better, penetrate obstacles better, shoot straighter, and do a lot more damage.
Buy a rifle as soon as you can.Be on the lookout for flash-bang grenades. You can usually hear them bouncing along the ground before you can see them. If one lands near you, quickly turn your head the other direction. This will minimize the flash effect, and possibly still leave you with some sight when your enemy jumps out to attack.If you still feel like you are outclassed by the "regulars," set up a local server on your own PC and play against some bots.
Bots can be configured to play at various skill levels and are a great training tool.In Counter Strike, Iceworld is a controversial map indeed. People see it as requiring no skill or just as much skill as any other CSGO Skins.