2005 Chevy cobalt crank but won’t start

Don't change any more parts until you find the problem. Scan it for trouble codes. That should give you some direction. Also listen for the fuel pump and check the fuel pressure. The fuel pump may have failed. While you're at it check the spark plugs. Bad plugs won't stop the car from starting, but if they're worn out the car will jerk, especially in the low gears. Also take the throttle body off and give it a good cleaning. That will also cause jerking, but again, it won't prevent the car from starting. You may have multiple problems. Troubleshoot first, then buy parts.