Does my french make sense?

"il �tait une fois un elephant a n�. Il va au supermarche parce que il voudrais a mange fromage. Il rencontrer une souris et il n'a pas content." and also how do u say "he got scared and ran away. He fell and died" in French? Please do not go to goggle translate cuz it doesn't do p� compose and please state ur source thank u