Let's talk about Rey's training

Luke was Vader's son, both inherently strong with the Force. Both trained. It was made clear that Vader never met his full potential because of him getting chopped up and put in the suit. Luke also got his ass kicked the first time they fought. It was only until Vader provoked him by threatening Leia that Luke briefly gave into the dark side in a fit of rage, and overcame Vader.

Comparing this to Rey, who apparently doesn't have Force-sensitive parents ("the Force is strong in my family" - it matters) and received essentially no training whatsoever yet can beat a trained-by-Luke Kylo, flawlessly use mind tricks, use force pulls that took Luke years to learn, and lift thousands of pounds of rock mere days after learning what the Force even is, is so ridiculous that I have a hard time believing you're not a troll.

Luke didn't defeat Vader, he defeated a shell of him...a machine.