Can leaking fuel injectors cause cold start issues?

My car will turn over and start but immediately idle/die when cold starting. After adding fuel injector cleaner the problem got WORSE and now basically won't even start up. Starts with starter fluid so it should be the pump.

yes, they can by making fuel pressure too low.

To replace the injectors, i would need injectors, o rings, and replace the fuel filter at the same time? Anything i'm missing that i should replace at the same time?

yes, that's a good idea to do all that, but you have all bases covered, nothing else needed

Thanks! I used your videos to do my own spark plugs and it was a breeze :D