This isn't meant to be cruel, but not everyone is meant to be, or can be, or will be, a writer. However, you're obviously creative and want to express yourself, so yes, you can work, practice, read, practice some more, take advice, etc., and you may eventually become a writer.
Or maybe there is another avenue for your creativity. You say you can see these scenes. You probably feel them as well, or the emotional content in them. Can you draw? If so, have you considered a graphic novel, or a novel with some graphics/pictures in them? You can therefore transform what you 'see' into pictures for us, your reading audience, to see and enjoy.
If you don't see yourself doing that, there's always the possibility of working with a partner, an artist, who transforms your ideas into art, or comics, or graphic art, and you supply the dialogue and other written elements that go into creating a story.
Just a thought.