Dont know if this is exactly what type of apps you are looking for but try APKtime, its like filelinked, most of the apps on here are for android tv as opposed to mobile, so you will be able to use a remote with these apps.
Or try Aptoide TV that is a store for android tv and set top boxes.
Apk mirror
You can check out appvn, not a bad option
Aptoide TV