Another thing you can do is put an LED in parallel with one of the injectors.
If it flashes when cranking, you know that the ECU is getting an rpm signal, and if you don't have spark, it's confined to the ignition system.
If it doesn't flash, you know the problem is not ignition, but crank/cam sensor, ECU or wiring between.
LED:
https://www.napaonline.com/en/p/LIT1058A
Pigtail:
https://www.napaonline.com/en/p/LIT94902
With a pin probe on each wire, it can slip into the back of an injector wire plug without disconnecting it.