I’m not sure if this will be any help.
-
I usually write my ideas in google docs immediately after getting an idea for one.
It really helps and when you combine those ideas together, you can get an amazing story. -
If you’re looking for story ideas, I would recommend watching tv shows to get some inspiration.
-
Think about the character’s backstory, their personality, likes and dislikes.
If you’re worrying about ‘same character personalities’ (I named it myself), then you can use the personalities of those around you.
I hope these small tips can help you to develop a wonderful story. 