I have aphantasia, I'm pretty sure. Or if visualisation skill is a scale, I'm just at the bottom of it.
I've always hated those meditation exercises where they tell you to "close your eyes, imagine you are on a beach, the sun is warm and the sound of waves is soothing" and stuff like that. None of those things work for me. Not the image of a place, not the feeling of being there, not sounds and smells. Nothing, nada.
The best I can get is an abstract idea of like a typical beach that I know or have seen an image of somewhere. I'll know there's sand, maybe palm trees and a crystal clear ocean as far as the eyes can see. But those are just words, something I know.
Perhaps the saddest example I have is that I can't imagine my parents' faces. Not even right after meeting them and saying goodbye. I literally can't tell you what they look like. Can't describe them either, except for obvious details like my dad not having a beard.
The funny thing is that I'm actually quite creative. I draw mostly abstract things or patterns, but if I have a reference, I can draw people and places well enough. Just not imaginary places, things or people.