When i get lucid it just starts to fade away and very soon i just see blackness of closed eyes. help pls
There are quite a few posts on this topic if you search. There’s some great advice out there.
In short, once lucid try to focus on what you feel in the dream. Rubbing your hands together seems to be one of the most effective anchors, but anything that gives you a sensation will help. Other than that, it just takes time and practice.