I suggest you begin by establishing whether the problem is due to fuel. Remove the spark plug and pull the starter cord briskly several times. Then put a small spoonful of 2 stroke mix into the cylinder through the spark plug hole, and reinstall the plug. Do not choke or prime the engine, but pull the starter cord briskly several times with the ignition on. If the engine then starts, runs for just a couple of seconds, then stops, you will have established that the problem is lack of fuel delivery. Come back and tell us what happens.