Well I wasn’t fooled by fake Luke not even for a second, but didn’t know how he was doing what he was doing until revealed.
What was he doing again? Was it stalling the First Order so that the 5% of the rebels who Poe hadn’t already gotten killed could sneak out the back even though Luke had no way of knowing that there was a way out the back, and in fact there wasn’t until Rey conveniently created one with the force when she just happened to show up in Falcon which was doubly fortunate since without the Falcon they’d all just be standing around out back waiting to be found an executed?
This was Luke’s plan? Buy the rebels 5 more minutes in hopes that the salvation that’s eluded them the whole movie will show up (now that most them are dead anyway), and of course it does because movie.
Collipso was referring to Luke doing his Force projection, but to answer your complaints, of course coincidental and unlikely things happen in movies. Otherwise it wouldn’t be interesting. All of what you mentioned is totally believeable. It wasn’t a coincidince that Rey showed up where they were. They were searching for lifeforms on the Falcon. Rey didn’t magically create an opening; the opening was already there, she just cleared the rcks from it. And what’s the problem with them having the Falcon? That’s like saying that Luke is so lucky that he had his lightsaber in Empire or else he would be totaly defenseless against Vader. Your complaints make no sense.