Rough idle

There are a number of things that could cause this but did this start when you picked the vehicle up or was it some amount of time later?

Either way, we need to start with checking for vacuum leaks. I attached a number of guides that will help with all of this.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

https://youtu.be/4ktw1X4W_-k

https://www.2carpros.com/articles/stall-at-idle

Next we need to check for codes to see if there are codes that will point us in the right direction.

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

It could have been caused by the people doing the alignment but there is not a direct correlation so we would have to find something they took off or knocked off while doing it. Otherwise I suspect it is a coincidence.

Let us know what you find and we can go from there. Thanks

Okay. This sounds like a possible crank sensor issue if there are no other vacuum leaks.

When the engine shuts off and will not restart we need to check for spark. The easiest way to do that is pull a plug and hold it against the block when you are cranking the engine to see if it sparks.

If not then the crank sensor is most likely the cause. Let me know what you find and we can go from there.

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor