The play store doesn't provide modded apps. Also if it was modded and not working it was most likely patched in an update by the creator to block access to the unauthorized alteration of there product.
And there are also some modded apks that require a rooted device to be able to install.
Or the version you trying to install isn't compatible with your android version
These apps can be dangerous to your device and data and its only recommended that you download from offical sources like google play or the galaxy store.