Rough idle, stalls and or falls flat on face while moving

Good morning,

I would check the fuel pressure to be sure there is enough fuel at the injectors.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Is the check engine light on?

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://www.2carpros.com/articles/engine-has-low-power-output

I would also have the cat converters checked to be sure they are not blocked not allowing the engine to breathe.

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

Lastly would be timing. check the compression to see if the timing chain is slacked causing retarded timing.

https://www.2carpros.com/articles/how-to-test-engine-compression

Roy