I used to be able to - even to control the dream some - but not for many, many years now. These days, I’m lucky if I even know where I am/what day it is/what reality is when I wake up.
i played around with lucid dreaming a bit, one sign for me is devices not doing what they’re supposed to - switches not working etc.
continuity - a clock will have changed its time, numberplates change… a scene doesnt make sense. you train yourself to question reality, how did i get here etc. sometimes you notice the flow is wrong.
annoying situations - sometimes you find yourself repeating something so boring or irritating in a dream you just say id rather be doing something else is there any possibility that im not awake now…