Thinking of writing a novel any ideas keep it pg

Do you like have a specific genre? Romance orrrrr

Ehhhh if start romance I am going to get exclipt so not that but maybe smt like a horror comedy as a side but detective the main theme I know I it's complicated but I have smt in my mind which is along the lines of a boys family moving in a town side house and there is a ghost but the boy isn't scared that part should be funny you know what I mean and then that boy and the ghost get a myestry to solve but I am not sure what it could be i need ideas for that