1999 Oldsmobile Alero Random Cyclinder Misfire Code

Check Engine light scan code states Random Cyclinder Misfire. I changed the Coils, Spark Plugs, and a cracked hose to MAF sensor. Problem still exists. What I am trying to narrow down is what to look for instead of spending money replacing parts to find the culprit. I've used Fuel injector cleaner, drove around a few hundread miles, and that did not work. Any sugesstions on what to look for?

Addtional Info: No fuel pressure test has been done yet. The car hesitates/misfires at idle and gets worse when AC is on. At highway speed car hesitates around 2700 RPMS then is sluggish/loss of power at 3000RPM (has hard time getting past 3000/3200RPM) At times when motor revs past 3000 RPM and I come to a complete stop car will shut off and start back up no problem. Samething happens if I turn wheel all the way and ask for additional power from power steering the car will shut down and start back up with turn of iginition. Other than that the car does not shut down, just hesitates/misfire at explained RPMS. This has been an ongoing issue for 8 months noone can find the source of my issue. Thank you for your help!