For some reason, I can't seem to be able to download Among Us. It says I can try and download the android version. I think that is why but I am not sure. As you can see in the top, I try selecting something for it to download with and nothing appears. Does anyone else have this problem and does it have a solution?

If you mean this game, it only has builds for Windows and Android. If you happen to be on another operating system, the app won't find any compatible build to install. In that case, I'm afraid your only option is to play the Android version, or else petition the developer for more builds. Sorry about that.