How do you restore purchases on App Store?

So I got Minecraft about 2 years ago on the same iCloud account. After awhile of using Minecraft I deleted it. A little bit ago I wanted to redownload it, so I went to the App Store. I got on the page and it said “$6.99” instead of the cloud w/ the arrow. I was confused so I hit the $6.99 button. It went to Touch ID and said nothing about redownloading. Someone please help me with this situation