I need some help making my Dream set for Lego ideas!

Hello, my name is Beckett. I am a teenager, and for the longest time my favorite movie had always been Ghostbusters and Gremlins. Also since I was like 6 I have been addicted to Lego. And I have been trying to make a Lego ideas set of Billy’s house from gremlins 1 or the toy store from the final battle. I have been trying for years and it has always been scraped because I never have the right pieces, the right amount of the pieces I need, and never in the right color. Well I was trying to...