Intermittent rough engine and misfires both in idle and while driving, codes P0305 and P0300

I might have made a small difference at first but it’s never stopped the issue. I felt a good change after the intake spray at first but has some crazy rough idle and even the oil light came on twice right after I did that treatment. That was befit I did the alternator though and never had the oil light come on again. I did get a p0207 around that time but it was the only time it came on. Honestly the alternator change seemed to have made a big difference when it was done. Didn’t feel like I was gonna be stranded after that but the problem keeps happening.

It only popped up once and never popped up again. The most constant codes I’m getting is 300 and 305. Would one injector cause a misfire in another cylinder or a random cylinder?

Also from what I understand, a 305 is not cylinder 5 but the 5th in the firing order. Is that correct? If so from everything I’ve found the firing order is 18436572.
7 and 5 are next to each other on the same bank and firing order but it would be cylinder 6 that’s actually 5th in firing and setting the 305 on the opposite bank.
So if that’s correct and sorry if I’m confused, I’m getting codes on random cylinders and on both banks. I’m open to just getting new injectors, there’s a lot of miles on the truck and not sure if they have ever been done before.

Just put a new pump assembly in a few days ago. The pressure regulator for my Jeep is in the pump assembly itself. Not sure what the pressure gate is but if it’s in the pump I just replaced it. Can injectors cause a pressure issue?

The diagrams I have say the regulator is inside the Fuel Pump assembly itself. Would there be 2 on a Commander?

Yes, it’s Flex Fuel.

I replaced the entire assembly. I’ll see if I can post the part.

That’s a picture of the part. Looks like everything is together in one unit. Filters, pump, regulator and fuel level.

The post where I said the fuel pressure was slowly dropping after I turned the key off was after the new pump was put in. And yes I have smelt fuel. My daughter has smelt fuel while riding before but it has been a while and that was before the pump. I had a buddy of mine that helps me with repairs also mention he’s smelt it as well.

I can hook the gauge back up and double check as well. What are your recommendations so that I know I’m doing it correctly?