Using I cloud for downloading applications

My IPAD had storage of 32 GB. So I could not upload more video games due to limited storage. I bought I cloud storage of 200 GB to make up for my limited storage. I have only used 66 GB of my 200 GB I Cloud storage but when I try to download new games, it still says “limited space” you cant install this application. Question is what is the use of buying additional I Cloud storage if I can’t use this on my IPAD, when I try uploading applications? Can somebody guide me?