It’s a 2015 Toyota Corolla 168,000 miles I replaced the spark plugs one of them were broken in the sleeve were it sits got it all cleaned out and replaced seemed good and after leaving it for 4 hours at work I started it and it gave a “cylinder 1 misfire” So my question is could it be an ignition coil or the injector should I just check both? Or is there something else I’m not thinking of?