Is it normal to not dream every night?
Yep.Totally normal
Yes, it’s normal not to remember a dream every night. You probably dream more often than it seems; remembering depends a lot on when and how you wake up.
Dreams can happen during sleep without leaving a memory behind. You’re more likely to remember one if you wake during or soon after it, so some mornings your mind serves up a whole movie and other mornings it’s just a blank screen.
Lots of people go through stretches when they rarely remember dreaming. Not recalling dreams every night, by itself, isn’t a sign that anything is wrong.