It was running ok, now it’s terrible, I need help!!!

or water in it. or just really rich.
Or dirty points/wrong condenser.
Since this was the last thing changed ....... I would put the old condenser back in it, and clean the points. . If you greased the pointcam with some thin grease that has flown off ....... well, get the right stuff, and clean, clean,clean.
But remember AJ, the motor was popping before the points and condenser were swapped out. He said every time the engine was started,,,,