Will crank and slow to start?

The car will crank just fine, but it's slow to start. Once the car starts, there's a bit of hesitation on acceleration.

One code related to the throttle body sensor, which I replaced. Other than that, no other codes nor is the engine check light is on. I've tested for spark, okay checked spark plugs and wires, and they look fine recently changed, and there's pressure in the fuel rail. Airflow is fine now with the updated throttle body. I once suspected a fuel issue, but once the car started it idles nicely.

Is it possible for a crankshaft or camshaft sensor to be buggy or faulty without throwing a code? I'm planning to change out today, not sure if this will solve the slow start issue.

Should I start considering a fuel issue (fuel rely, pump, filter, etc, )?